| Patents Granted on 1891-03-?? |
Patents 1 -
15
of 106
      |
| Number | Date | Patentee | Title | Type |
| 447,377 | Mar. 03, 1891 | D.P. Stanton | Pipe Wrench | pipe wrenches |
| 447,379 | Mar. 03, 1891 | J.H. Stiles | Wrench | wrench adjustment types |
| 447,475 | Mar. 03, 1891 | B.H. Pomeroy | Drill and Tap Scale | gauges |
| 447,535 | Mar. 03, 1891 | A.W. Billings, W.G. Billings | Rotary Engine | rotary steam engines |
| 447,553 | Mar. 03, 1891 | W. Barker | Machine for Grinding Lathe Centers | lathe center grinders |
| 447,604 | Mar. 03, 1891 | M. Cridge | Gage for Carpentry | marking gauges |
| 447,607 | Mar. 03, 1891 | W. Gleason | Safety Attachment for Lathes | metal lathe accessories and attachments |
| 447,642 | Mar. 03, 1891 | R.G. Hausdörfer | Trammel Head | trammels |
| 447,665 | Mar. 03, 1891 | F.S. Cook | Wrench | pipe and nut combination wrenches |
| 447,719 | Mar. 03, 1891 | F.H. Richards | Register for Grain Weighers | grain scales |
| 447,722 | Mar. 03, 1891 | A. Fager | Saw-Set | saw sets |
| 447,751 | Mar. 03, 1891 | H. Lyons | Combined Hat Conformator and Stretcher | hat making machines |
| 447,775 | Mar. 10, 1891 | C.A. Higbee | Screw bolt and nut | firefighting tools |
| 447,796 | Mar. 10, 1891 | T.L. Smith, P.W. Post | Carving-machine | carving machines |
| 447,805 | Mar. 10, 1891 | R. Yanda | Calipers | calipers |
