
U.S. Pat. No. 804,585
thingiverse
The 3D model of U.S. Patent No. 804,585 showcases advanced door stop technology from 1905, originating from Thingiverse and U.S. PTO. In a patent notice to all concerned parties, Harold T. DePue, a Montgomery, Maryland resident and U.S citizen, declared his invention of novel and practical Door-Stop enhancements. This detailed specification describes the innovative improvements.
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