| US Patent: 643,720 
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| Swing-back for Photographic Cameras | 
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| Patentee: |  |
 | Harvey W. Locke (exact or similar names) - Rochester, Monroe County, NY |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Aug. 22, 1899 |  
| Granted: | Feb. 20, 1900 |  USPTO (New site tip)
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                        Joel Havens
 
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| Description: |  | Claim:
The combination of a camera-bed,a swing back pivotally and slidingly connected therewith, and links pivotally connected at opposite ends to said camera-bed and swingback respectively, whereby said swingback moves vertically as it swings, substantially as set forth. |  |