Patented August 9, 1921
If an object in your hands says PAT. AUGUST 9, 1921, it may be one of these.
| Patent | Title | Inventor | Of |
|---|---|---|---|
| US 1,386,778 | LOCKING DEVICE | Raymond K. Gray | Chicago, Illinois |
Three centuries of keeping things shut
If an object in your hands says PAT. AUGUST 9, 1921, it may be one of these.
| Patent | Title | Inventor | Of |
|---|---|---|---|
| US 1,386,778 | LOCKING DEVICE | Raymond K. Gray | Chicago, Illinois |