H.—lo.

H. —Table showing Number of Applications for Patents for the Different Classes of Inventions for each of the Years 1920, 1921, and 1922.

7

Class. 1920. 1921. 1922. Class. I 1920. 1921. 1922. Advertising and displaying signs, &c. 20 27 26 Illuminating (except gas-manufac-ture) Indicating, calculating, and measuring (including moisture-testers) 50 50 57 79 57 Aeronautics Amusements, music, exercisers, games, &c. Attaching and securing (including bolts, ties, &c.) 23 80 8 85 8 81 81 81 88 115 88 72 74 123 Kitchen utensils and cookingappliances (including ovens) 86 86 61 103 61 Boilers (steam) Boots and shoes Bottles, bottling, and glass-working Boxes, cans, and casks Brewing, distilling, &c. .. Brooms and brushes (including mops) Building construction (brick and cement compositions and moulding) „ (windows and doors) 21 46 35 81 33 19 16 32 17 87 85 31 10 58 39 143 22 25 Lifting, hauling, and loading Locks, latches, and hinges 60 51 60 45 60 51 39 70 45 39 Marine and submarine (including lake and river engineering) Marking (tickets, labels, &c.) Medicines and surgical appliances (including ear-instruments, dental work, &e) Metal-working (including welding, stamping, and plating) Milking-machines* Minerals (including filtration, lixi viation, screens, &o.) „ (magnetic soparators) (stampers and pulverizers) 34 34 36 16 36 6 17 9 48 39 56 C 48 17 39 73 102 71 122 71 93 55 50 50 50 55 22 21 48 57 126 134 24 35 24 126 35 Onemicals Cleaning, polishing, &c. Closets and urinals Coin-freed mechanism Cooling and freezing Cultivating and tilling Cutting and sawing, and tools 23 28 22 6 20 68 98 62 25 23 2 25 43 120 46 41 31 4 43 45 111 57 24 1 5 1 1 1 5 4 4 1 4 Oils and lubricators 48 48 50 45 50 Paints and painting (inoluding kauri-gum) Pipes, tubes, and hose Preserving Presses Printing ami photography Pumps and sprayers (except rotary pumps) 59 59 58 45 58 Dairying* Drains and sewors Dredging and excavating (including rock-drills) Drying 45 8 .14 50 10 33 75 11 18 30 18 6 30 51 30 28 38 18 20 13 6 13 4 30 34 36 51 54 55 28 20 13 34 54 30 20 40 Electricity and magnetism Engines (air, gas, and oil) „ (steam), including rotary pumps (miscellaneous and engine accessories), including current motors, solar motors, tide motors, wave motors, windmills, miscellaneous motors Explosives, firearms, and targets .. Exterminating (including trapping animals) 96 135 27 87 138 104 i 23 118 151 . 120 30 139 Railways and tramways Roads and ways (including roadwatering) Seed-dressing, chaff-cutting, and threshing Seed-sowers Sowing and knitting Sheep and cattle (including veterinary appliances) Sheep shearing and clipping Shop and hotel fittings Stationery and paper 57 14 57 59 56 14 I 14 8 8 16 14 59 1 10 9 18 26 9 6(8 18 32 | 28 26 38 j 57 6 32 38 16 17 3 29 33 41 10 19 53 10 6 11 19 31 23 53 82 69 6 31 82 Fencing (strainers) Fibre-dressing (including ropemaking) Filters .. Fire alarms, escapes, ladders, and extinguishers Pood .. Furnaces and kilns (including smokeconsumers) Furniture and upholstery, desks, blinds, curtains, &o. 22 18 26 9 4 9 17 17 22 Telephony and telegraphy (including phonographs) Tobacco 147 147 139 129 139 11 11 11 9 11 4 8 16 21 30 17 Valves and cocks Vehicles „ (velocipedes) Ventilating 34 164 89 3 34 24 I 48 164 146 I 168 89 67 ' ! 84 3 10 j 13 24 146 67 10 34 38 39 29 17 26 77 77 i 115 Washing and cleansing Water-supplying Wearing-apparel Wools and hides 43 10 54 23 43 43 j 54 10 13 ] 25 54 52 ! 54 23 16 ! 19 43 13 52 16 Gas-manufacture for lighting, heating, or power purposes 36 27 30 I I Miscellaneous inventions not in other classes, as indiarubbermanufacture, fishing-appliances, 27 27 33 32 83 Harness (including horse, &c., covers) Harvesting and grading Heating, and fuel-manufacture .. 14 18 | 11 9 19 ! 28 103 102 ; 108 * Prior to 1911 milking-machines we ive included in class "J lirying," but are now a separate ela.ss. Note. —Owing to some inventions b number of applications received. aeing classified under c >re than one heading, the figures will totai more than the actual