| RMD - Plier type | ||||
|---|---|---|---|---|
| Patent Number | Date | Inventor | Description | |
| 00225519 | 1880 | Hansen | Comb frame tongs | |
| 00272320 | 1883 | Ralston | Brick Tongs | |
| 00433756 | 1890 | Wilson | Fabric holding and stretching clamp | |
| 00453905 | 1891 | Holt | Tongs for handling comb frames | |
| 00871489 | 1907 | Dow | Comb frame lifter | |
| 01184491 | 1916 | Ross | Appliance for removing comb frames from beehives | |
| 01364820 | 1921 | Smith | Grab | |
| 01370775 | 1921 | Bacon | Beehive | |
| 01553734 | 1925 | Wilson | Tool for extracting frames from beehives | |
| 01559868 | 1925 | Hall | Tool for apiarists | |
| 01669641 | 1928 | Zeitler | Device for lifting comb frames used in beehives | |
| 01755941 | 1930 | Wilson | Beehive frame hook | |
| 01788577 | 1931 | kouba | Honeycomb frame handling pliers | |
| 01848485 | 1932 | Keller | Comb frame handler | |
| 02251529 | 1941 | Sterling | Comb frame lifting tongs | |
| 02997326 | 1961 | Daum | Locking handle grip | |
| 03820177 | 1974 | Croan | Honeycomb spacer strip | |
| 04453281 | 1984 | Shanabarger | Bee hive frame spacer | |