| Patents for P. E. Chapman Electrical Works, Inc. |
Patents 1 -
15
of 26
      |
| Number | Date | Patentee | Title | Type |
| 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 | P.E. Chapman, R.H. Robinson | 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 |
| 1,699,833 | Jan. 22, 1929 | P.E. Chapman | Picture-projecting apparatus | projectors |
| 1,759,479 | May 20, 1930 | P.E. Chapman | Testing instrument | electric or electronic testing apparatus |
| 1,902,542 | Mar. 21, 1933 | P.E. Chapman | Testing instrument and regulator | electric or electronic testing apparatus |
| 1,924,913 | Aug. 29, 1933 | P.E. Chapman, C.L. Chittenden | Growler type testing device | electrical devices |
