| All Patents in class 73 |
Patents 316 -
330
of 662
      |
| Number | Date | Patentee | Title | Type |
| 1,134,039 | Mar. 30, 1915 | W. Dieter | Torpedo-testing apparatus | torpedoes |
| 1,134,316 | Apr. 06, 1915 | A.B. Collette | Testing Apparatus | testing machines |
| 1,138,082 | May 04, 1915 | W.H. Carrier | Hygrostat or thermostatic device | |
| 1,145,902 | Jul. 13, 1915 | E.A. Kelsey | Sighting Glass | lubricating accessories |
| 1,147,835 | Jul. 27, 1915 | R. Wood | Low Water Alarm for Steam Boilers and the Like | low water alarms |
| 1,154,018 | Sep. 21, 1915 | F.H. Hopkins | Dead Weight Gage Tester | testing machines |
| 1,154,663 | Sep. 28, 1915 | W.F. Shore | Scleroscope | metal hardness testers |
| 1,161,875 | Nov. 30, 1915 | H.C. Morrow | Gas Engine Recorder | internal combustion engine indicators |
| 1,165,225 | Dec. 21, 1915 | W.H. Carrier | Humidity meter | |
| 1,166,070 | Dec. 28, 1915 | C.J. Manning | Gage for Indicating Fluid Pressures | vacuum and pressure gauges |
| 1,169,617 | Jan. 25, 1916 | E.W. Comfort | Thermo-electric humidity instrument | |
| 1,169,982 | Feb. 01, 1916 | C.J. Manning | Pressure Gage | vacuum and pressure gauges |
| 1,190,945 | Jul. 11, 1916 | J.L. Osborne | Pump Controlling Device | pumps |
| 1,190,946 | Jul. 11, 1916 | J.L. Osborne | Governor | steam engine governors |
| 1,192,443 | Jul. 25, 1916 | C.J. Manning | Double Spring Gage | vacuum and pressure gauges |
