| Patents Granted on 1961-04-?? |
Patents 1 -
15
of 22
      |
| Number | Date | Patentee | Title | Type |
| 2,977,696 | Apr. 04, 1961 | T.V. Williams | Grubber Attachment for Bulldozers | bulldozers |
| 2,977,824 | Apr. 04, 1961 | T.O. Rueb | Wrench Making Method | making wrenches |
| 2,977,860 | Apr. 04, 1961 | V.D. Hery | Machine for Producing Containers | pan making machines |
| 2,978,081 | Apr. 04, 1961 | D.M. Lundin | Devices in Ratchet Wrenches | ratchet wrenches |
| 2,978,082 | Apr. 04, 1961 | B.R. Better | Overload Release Clutch | tool clutches |
| GB-864,741 | Apr. 06, 1961 | J.A. Lavallee | Reamer manufacture | reamers |
| 2,978,803 | Apr. 11, 1961 | L.F. Davies | Hand Press for Installing Bushings in Excavator Booms and the Like | industrial presses |
| 2,978,843 | Apr. 11, 1961 | B.H. Johnson, F.E. Birtch | Apparatus for Grinding Double-Enveloping Worm Elements | gear grinding machines |
| 2,978,965 | Apr. 11, 1961 | J.N. Flannery, J.B. Armitage | Torque Limiting Control | milling machines |
| 2,978,966 | Apr. 11, 1961 | H.F. Swenson | Milling Machine Device | milling machine accessories |
| 2,978,976 | Apr. 11, 1961 | M.W. Hazelton, R.E. Griesheimer, C.J. Ostendorf | Level control for press brakes and the like | sheet metal brakes |
| 2,979,102 | Apr. 11, 1961 | J.E. Brussock, H.C. Ferguson | Straightening Tool | |
| 2,979,903 | Apr. 18, 1961 | L.R. Beck | Air-hydraulic apparatus | hydraulic apparatus |
| FR-1,258,816 | Apr. 21, 1961 | . | Apparatus for preparing plastic materials before molding | plastic molding machines |
| D190,185 | Apr. 25, 1961 | F.J. Kuenzl | Hand-operable belt sander | handheld power sanders |
