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Patent US 3807240A: Difference between revisions
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|Title=Shaft-operating means | |Title=Shaft-operating means | ||
|Company=Tektronix Inc | |Company=Tektronix Inc | ||
|Inventors= | |Inventors=Al Huegli | ||
|Filing date=1971-12-30 | |Filing date=1971-12-30 | ||
|Grant date=1974-04-30 | |Grant date=1974-04-30 | ||
}} | }} | ||