| Patents for none listed |
Patents 2821 -
2835
of 3252
      |
| Number | Date | Patentee | Title | Type |
| 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 | |
| D263,809 | Apr. 13, 1982 | K. Nakata, H. Suwa | Micrometer | micrometers |
| 4,355,468 | Oct. 26, 1982 | M. Nakahara, I. Mizuno | Micrometer | micrometers |
| 4,369,660 | Jan. 25, 1983 | S.B. Servals, T.J. Lasky, R.P. Lentz | Electronic Pressure Measuring Apparatus | |
| 4,373,384 | Feb. 15, 1983 | G.A. Kaufman, T.P. Becker, C.B. Stout, D.D. Grover, J.A. Thompson, G.E. Olson | Diesel Engine Timing Apparatus | |
