| Patents Granted on 1921-06-28 |
Patents 1 -
13
of 13
      |
| Number | Date | Patentee | Title | Type |
| RE15,135 | Jun. 28, 1921 | R.A. Rosander | Wrench | quick adjust wrenches |
| 1,382,611 | Jun. 28, 1921 | B.F. Augustine | Rotary Gas Engine | rotary engines |
| 1,382,717 | Jun. 28, 1921 | J. Duplessie | Measuring Device | special purpose gauges |
| 1,382,720 | Jun. 28, 1921 | W.R. Fox, A.A. Riddell | Flexible shaft-coupling | |
| 1,382,743 | Jun. 28, 1921 | J.F. Pribnow | Saw-swage | saw swages |
| 1,382,794 | Jun. 28, 1921 | M.L. Luebben | Machine for Sharpening Safety Razor Blades | household tools |
| 1,382,802 | Jun. 28, 1921 | T.A. Rendle | Watchmen's clock dial holder | |
| 1,382,851 | Jun. 28, 1921 | J.A. Pitsch | Adjustable Friction Wrench | ratchet wrenches |
| 1,382,852 | Jun. 28, 1921 | E.W. Pittman | Method and apparatus for finishing gunstocks | gunsmith |
| 1,382,932 | Jun. 28, 1921 | F.M. Ramsdell | Hand Tool | portable turning tools |
| 1,382,995 | Jun. 28, 1921 | H.R. Lucke | Process and Apparatus for the Utilization of Heat in Oil Engines | oil engines |
| 1,383,123 | Jun. 28, 1921 | R.H. Jones | Grease Cup Wrench | wrenches |
| 1,383,208 | Jun. 28, 1921 | L.H. Holland | Riving device | wood splitting machines |
