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Patents for Joseph G. Groff
Patents 1 - 11 of 11
First set of recordsLast set of records
NumberDatePatenteeTitleType
247,558Sep. 27, 1881J.G. GroffCircular-saw guardwoodworking machine safety guards
263,171Aug. 22, 1882J.G. GroffSaw-guardwoodworking machine safety guards
264,149Sep. 12, 1882J.G. GroffGuard for circular sawswoodworking machine safety guards
266,466Oct. 24, 1882J.G. GroffSaw-guardwoodworking machine safety guards
277,711May 15, 1883J.G. GroffSaw-guardwoodworking machine safety guards
278,130May 22, 1883J.G. GroffSaw-guardwoodworking machine safety guards
284,199Sep. 04, 1883J.G. GroffSaw-guardwoodworking machine safety guards
291,187Jan. 01, 1884J.G. GroffSaw-guardwoodworking machine safety guards
307,112Oct. 28, 1884J.G. GroffSaw-guardwoodworking machine safety guards
311,486Feb. 03, 1885J.G. GroffSaw-guardwoodworking machine safety guards
323,318Jul. 28, 1885J.G. GroffSaw-guardwoodworking machine safety guards
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