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| Patents Granted on 1978-02-21 | |||||
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| Number | Date | Patentee | Title | Type | |
| D247,279 | Feb. 21, 1978 | R.K. Marceca | Combined Corkscrew And Can Opener Or Similar Article | cork easers | |
| 4,074,737 | Feb. 21, 1978 | J.S. Stewart | Wood planer cutterhead design for reduced noise level | cutterheads | |
| 4,074,772 | Feb. 21, 1978 | G.N. Jonsson | Torquing tool control circuit | ||