| Patents for none listed |
Patents 2836 -
2850
of 3275
      |
| Number | Date | Patentee | Title | Type |
| GB-2,053,748 | Feb. 11, 1981 | J. Harman | Locking Device for Indexing Mechanism for a Machine Tool | indexers and dividers |
| GB-2,053,749 | Feb. 11, 1981 | J. Harman | Tool Holders | metalworking machine tool holders |
| 4,255,861 | Mar. 17, 1981 | H. Suwa, K. Nakata | Electrically Digital Display Micrometer | micrometers |
| 4,256,295 | Mar. 17, 1981 | E.A. Egner | Adjustable Clamp | clamps |
| 4,262,527 | Apr. 21, 1981 | J.A. Thompson, D.D. Grover | Self-Adjusting Engine Timing Pickup Probe | |
| 4,267,627 | May 19, 1981 | R. Douglas | Attachment for Valve Spring Depressing Tool | valve spring tools |
| 4,274,309 | Jun. 23, 1981 | P.E. Lenker | Method of Manufacture of Certain Hand Wrenches and the Like | ratchet wrenches |
| 4,280,379 | Jul. 28, 1981 | K.K. Chow | Reversible Ratchet Wrench | ratchet wrenches |
| 4,281,928 | Aug. 04, 1981 | A.N. Brunson | Optical Transit Square with Focusable Crossing Telescopes | surveyor |
| 4,284,257 | Aug. 18, 1981 | D.W. Murkens | Precision Surface Gage | measurement gauges |
| GB-2,068,791 | Aug. 19, 1981 | J. Harman | Chucks | metal lathe chucks |
| D260,476 | Sep. 01, 1981 | G.H. Knauss | MEYERPLIER | locking pliers |
| 4,290,329 | Sep. 22, 1981 | T.O. Green | Torque Release Wrench of the Preset Type | torque wrenches |
| D261,096 | Oct. 06, 1981 | C. Petersen | Hand Tool | locking pliers |
| 4,302,724 | Nov. 24, 1981 | N.C. Neumann, D.D. Grover | Pickup Probe for Engine Timing | |
