| Patents for Harold O. Van Antwerp |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 1,012,614 | Dec. 26, 1911 | J.K. Diamond | Belt-lacing machine | belts, belt lacing and belt lacers |
| 1,037,843 | Sep. 10, 1912 | D.S. Ackley | Saw-guard | woodworking machine safety guards |
| 1,060,746 | May 06, 1913 | J.K. Diamond | Tool for clenching belt-fasteners | belts, belt lacing and belt lacers |
| 1,066,801 | Jul. 08, 1913 | J.K. Diamond | Carding-paper for belt-fasteners | belts, belt lacing and belt lacers |
| 1,075,321 | Oct. 14, 1913 | M.D. Baldwin | Machine element | sharpening machines |
| 1,128,421 | Feb. 16, 1915 | J.K. Diamond | Tool for clenching belt-fasteners | belts, belt lacing and belt lacers |
