| US Patent: 532,658 
 | 
| Folding Ruler | 
| 
| Patentee: |  |
 | George Curtis Gillespie (exact or similar names) - Bath Beach, NY |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
 | 
| Patent Dates: |  
| Applied: | Nov. 28, 1893 |  
| Granted: | Jan. 15, 1895 |  USPTO (New site tip)
 Google Patents
 Report data errors or omissions to steward 
                        Russ Allen.
 
 | 
| 
| Description: |  | All joints are made flush instead of having projecting knuckles on any sides while still folding the same way as conventional wooden folding rules. |  |