DATAMP

US Patent: 1,589,156

Linoleum Cutter Patentee: John C. Hartman - Lancaster PA Granted:1926-06-15

Plane style holder for a linoleum knife for creating tight seams. Production model closely follows the patent drawing. The example I own has a invalid patent date of 17 Dec 1925 cast in the body. This marking helped to test a theory about invalid patent dates and if manufactures utilized the application date when beginning the production run. In this one example the marked date does not correspond to the application date of 15 AUG 1922.
This is one of 58,803 patents currently in the database at datamp.org

Categories: DATAMP

US Patent: 556,248

DATAMP Wacky Patents - May 26, 2018 - 2:32pm
Saluting Device Patentee: James C. Boyle - Spokane WA Granted:1896-03-10

1 of 12 patents in the Parker Brothers Inventor's Game. Another is 18,691 Here as part of Russ Allen's MWTCA Gadgets, Gizmos, and Mechanical Marvels display.
This is one of 58,803 patents currently in the database at datamp.org

Categories: DATAMP

US Patent: 902,799

Wrench Patentee: Ralph S. Barrett - Indianapolis IN Granted:1908-11-03

The patent covers multiple details of the construction. Two prominent features are the adjusting screw with right- and left-hand threads, and the side flanges which protect the handle and adjuster from some incidental damage. Advertised as the Double-Speed Monkey Wrench.
This is one of 58,798 patents currently in the database at datamp.org

Categories: DATAMP

US Patent: 560,351

DATAMP Wacky Patents - May 25, 2018 - 2:01pm
Device For Producing Dimples (human) Patentee: Martin Goetze - Berlin Germany Granted:1896-05-19

1 of 12 patents in the Parker Brothers Inventor's Game. Another is 556,248 Here as part of Russ Allen's MWTCA Gadgets, Gizmos, and Mechanical Marvels display.
This is one of 58,798 patents currently in the database at datamp.org

Categories: DATAMP

US Patent: 902,570

Stretching Pincers Patentee: William P. Ellis - Philadelphia PA Granted:1908-11-03

Pincers designed to grip and stretch artists' canvas.
This is one of 58,796 patents currently in the database at datamp.org

Categories: DATAMP

US Patent: 363,037

DATAMP Wacky Patents - May 24, 2018 - 1:59pm
Means and apparatus for propelling and guiding baloons Patentee: Charles Richard Edouard Wulff - Paris France Granted:1887-05-17

1 of 12 patents in the Parker Brothers Inventor's Game. Another is 560,351 Here as part of Russ Allen's MWTCA Gadgets, Gizmos, and Mechanical Marvels display.
This is one of 58,796 patents currently in the database at datamp.org

Categories: DATAMP

US Patent: 490,964

DATAMP Wacky Patents - May 22, 2018 - 1:41pm
Combination clothes brush Patentee: Thomas W. Helm - Danville VA Granted:1893-01-31

1 of 12 patents in the Parker Brothers Inventor's Game. Another is 1,159,804 Here as part of Russ Allen's MWTCA Gadgets, Gizmos, and Mechanical Marvels display.
This is one of 58,786 patents currently in the database at datamp.org

Categories: DATAMP

Pages

Subscribe to Patent and Trademark Resource Center Association aggregator - DATAMP