| Patents for Armstrong Bros. Tool Co. |
Patents 31 -
36
of 36
      |
| Number | Date | Patentee | Title | Type |
| 2,211,039 | Aug. 13, 1940 | S.J. Welter | Thread Cutting Tool Holder | lathe tools |
| 2,705,441 | Apr. 05, 1955 | J.O. Armstrong | Hold-Down Clamp | clamps |
| 2,887,760 | May 26, 1959 | J.O. Armstrong | Cutting Tool | lathe tools |
| 3,052,462 | Sep. 04, 1962 | J.M. Butler | Swivel Pad for C Clamps and the Like | clamps |
| 3,695,126 | Oct. 03, 1972 | J.M. Butler, B.M. Armstrong | Indexable Turret Tool Post | metal lathe accessories and attachments |
| 4,833,831 | May 30, 1989 | W.T. Armstrong, Jr. | Apparatus and Method for Sizing and Finishing Fixed Jaw Openings of Open-Ended Wrenches | wrench components |
