| All Patents in class 173/170 |
Patents 1 -
15
of 34
      |
| Number | Date | Patentee | Title | Type |
| 271,781 | Feb. 06, 1883 | B. Brazelle | Steam-engine | pneumatic tools |
| 284,173 | Sep. 04, 1883 | B. Brazelle | Direct-acting engine | pneumatic tools |
| 433,150 | Jul. 29, 1890 | W.F. Schmidt | Throttle Valve for Direct Acting Engines | steam engines |
| 494,461 | Mar. 28, 1893 | F.H. Cathcart | Power-Driven Tool | |
| 809,394 | Jan. 09, 1906 | A. Pedersen | Electrically-operated portable drill | handheld power tools |
| 912,655 | Feb. 16, 1909 | W.O. Duntley | Pneumatic-tool handle | pneumatic tools |
| 993,352 | May 30, 1911 | W.O. Duntley | Electric drill | handheld drills |
| 1,004,437 | Sep. 26, 1911 | A. Kimble | Alternating-current motor | electric motors |
| 1,099,392 | Jun. 09, 1914 | R.A. Norling | Pneumatic-turbine drill | pneumatic tools |
| 1,245,860 | Nov. 06, 1917 | S.D. Black, A.G. Decker | Electrically-driven tool | handheld power tools |
| 1,502,169 | Jul. 22, 1924 | C.B. Bennett | Electric tool | handheld drills |
| 1,539,068 | May 26, 1925 | B.W. Brockett | Motor hand tool | handheld drills |
| 1,539,069 | May 26, 1925 | B.W. Brockett | Handle for motor hand tools | handheld drills |
| 1,548,020 | Aug. 04, 1925 | S.D. Black, A.G. Decker | Reversing means for electric tools | handheld power tools |
| 1,702,742 | Feb. 19, 1929 | W. Moretti | Electric tool | handheld drills |
