| Patents Granted on 1939-12-?? |
Patents 1 -
15
of 41
      |
| Number | Date | Patentee | Title | Type |
| CA-385,422 | Dec. 05, 1939 | L.A. Wilkie | Convertible filing machine | filing machines |
| CA-385,459 | Dec. 05, 1939 | L. Coddington | Variable speed transmission mechanism | metalworking variable speed mechanisms |
| 2,182,228 | Dec. 05, 1939 | W.F. Groene, W.R. Meyer | Method of machining crankshafts | crankshaft lathes |
| 2,182,231 | Dec. 05, 1939 | R.K. Blond | Attachment for cutter grinders | tool grinders |
| 2,182,234 | Dec. 05, 1939 | A.H. Pneuman | Power operated hacksaw | metal sawing machines |
| 2,182,411 | Dec. 05, 1939 | J.A. Scully, B.F. Rosenberg | Tool Holder | drilling and boring tool holders |
| 2,182,478 | Dec. 05, 1939 | R.G. Jacobson | Boring Head | boring heads |
| 2,182,725 | Dec. 05, 1939 | C. Jones | Tiltable adjustable sanding wheel | sanding machines |
| GB-515,554 | Dec. 07, 1939 | H.H. Asbridge | Improvements in grinding or abrading machines | |
| GB-515,599 | Dec. 08, 1939 | J. Jewsbury | Improvements relating to radial-arm drilling machines | radial drill presses |
| 2,182,922 | Dec. 12, 1939 | E.A. Heschel | Method of Producing a Socket Wrench Head | wrench sockets |
| 2,183,207 | Dec. 12, 1939 | D.D. Wile | Valve Structure | valves |
| 2,183,258 | Dec. 12, 1939 | J.R. Harman | Power operated router | routing machines |
| 2,183,282 | Dec. 12, 1939 | F.F. Rike | Fill box | |
| 2,183,297 | Dec. 12, 1939 | G.K. McKee, C.E. Bernitt | Machine tool | drill presses |
