| Patents for PROTO |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 2,007,432 | Jul. 09, 1935 | E. Mancuso | Combination Screw Driver and Socket Wrench Tool | combination tools |
| 2,310,759 | Feb. 09, 1943 | I.C. Clawson | Drill with Adjustable Head | eggbeater drills |
| 2,600,512 | Jun. 17, 1952 | H.A. Mead | Adjustable Pliers | pliers |
| 2,671,367 | Mar. 09, 1954 | J. Modin | Angularly Adjustable Handle for Socket Wrenches | wrench handle components |
| 2,905,037 | Sep. 22, 1959 | C.W. Coslow | Worm Locking Means For Adjustable Jaw Wrench | wrench adjustment locks |
| 3,119,290 | Jan. 28, 1964 | R.G. Ivie | Work Gripping Wrench Socket | socket wrenches |
