| Patents Granted on 1907-05-21 |
Patents 1 -
15
of 22
      |
| Number | Date | Patentee | Title | Type |
| CA-105,386 | May 21, 1907 | J.L. Strickland | Rotary engine | rotary steam engines |
| CA-105,414 | May 21, 1907 | J.K. Cullen, G.T. Reiss | Car wheel press | hydraulic metalworking presses |
| 854,075 | May 21, 1907 | F.W. Burpee | Can-salting machine | canning apparatus |
| 854,100 | May 21, 1907 | C.W. Meadowcroft, Sr. | Tool Holder | lathe tool holders and tool posts |
| 854,116 | May 21, 1907 | W.W. Tainter, G.P. Stanley | Toothpick machine | toothpick making machines |
| 854,144 | May 21, 1907 | P. Broadbooks | Drill Bit | metalworking twist drills |
| 854,145 | May 21, 1907 | P. Broadbooks | Pipe and Rod Gripping Attachment for Vises | pipe and chain vises |
| 854,174 | May 21, 1907 | J.N. Noyer | Ratchet Wrench | ratchet wrenches |
| 854,246 | May 21, 1907 | J.W. Smith | Carbureter | carburetors |
| 854,270 | May 21, 1907 | W.H. Carrier | Method of heating and humidifying air | air conditioning apparatus |
| 854,325 | May 21, 1907 | H.F. Belcher | Desk Ruler | rules |
| 854,333 | May 21, 1907 | G. Cousino | Scribe Gage | marking gauges |
| 854,351 | May 21, 1907 | A.W. Hight | Combination-square | squares |
| 854,352 | May 21, 1907 | F.G. Hobart | Sprayer | sprayers |
| 854,353 | May 21, 1907 | F.G. Hobart | Pump | fuel pumps |
