| Patents for Penrose E. Chapman |
Patents 1 -
15
of 29
      |
| Number | Date | Patentee | Title | Type |
| 706,798 | Aug. 12, 1902 | P.E. Chapman | Electric testing apparatus | electric or electronic testing apparatus |
| 731,857 | Jun. 23, 1903 | P.E. Chapman | Electric motor | electric motors |
| 733,149 | Jul. 07, 1903 | P.E. Chapman | Method of changing the frequency of single-phase induction-motors | split phase motors |
| 822,186 | May 29, 1906 | P.E. Chapman | Elevator safety-alarm | elevators and lifts |
| 874,163 | Dec. 17, 1907 | P.E. Chapman | Armature-winding machine | electric motor making |
| 1,121,798 | Dec. 22, 1914 | P.E. Chapman | Drum-armature-winding machine | electric motor making |
| 1,312,610 | Aug. 12, 1919 | R.H. Robinson, P.E. Chapman | Variably pitched and actuated bell | fire alarms |
| 1,351,230 | Aug. 31, 1920 | P.E. Chapman | Armature and coil winding machine | electric motor making |
| 1,396,728 | Nov. 15, 1921 | P.E. Chapman | Unreeling and tension device | electric motor making |
| 1,500,181 | Jul. 08, 1924 | P.E. Chapman | Armature and coil winding machine | wire winding machines |
| 1,523,630 | Jan. 20, 1925 | P.E. Chapman | Armature-winding machine | electric motor making |
| 1,541,626 | Jun. 09, 1925 | P.E. Chapman | Taping machine | electric motor making |
| 1,579,808 | Apr. 06, 1926 | P.E. Chapman | Armature-winding machine | electric motor making |
| 1,662,881 | Mar. 20, 1928 | P.E. Chapman | Armature-winding machine | electric motor making |
| 1,682,213 | Aug. 28, 1928 | P.E. Chapman | Winding and dereeling device | wire winding machines |
