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American Patent :Paper lifting device No. US000001065092 |
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 Pinche para ampliar
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Description
This is an american patent for improvement in the mechanism of a paper lifting device; here, also used to realize a convertible rooftop mechanism of a car. The structure is similar. It has been patented by Clarence Steere of Chicago, USA on June 1913 with Carl Wolfermann as the witness. |
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