All Patents in class 427 |
Patents 16 -
30
of 44
|
Number | Date | Patentee | Title | Type |
261,198 | Jul. 18, 1882 | R. Barton | Dental Grinding Tool | dental apparatus |
323,372 | Jul. 28, 1885 | W. Stanley, Jr., E.P. Thopmson | Carbon for incandescent lamps | electric arc lamps |
334,472 | Jan. 19, 1886 | J.S. Roberts | Process of Ornamenting Glass Surfaces | glass cutters |
567,966 | Sep. 22, 1896 | D. Drawbaugh | Substance for telephone-electrodes | |
577,671 | Feb. 23, 1897 | N. Tesla | Manufacture of Electrical Condensers, Coils, &c. | |
830,003 | Sep. 04, 1906 | J.M. Rauhoff | Process of rendering cement blocks waterproof | |
878,463 | Feb. 04, 1908 | F. Hanaman, A. Just | Process of Manufacturing Incandescent Bodies for Electric Lamps | incandescent light bulbs |
1,675,419 | Jul. 03, 1928 | G.T. Pfleger | Process of insulating motor windings | motor windings |
1,854,071 | Apr. 12, 1932 | E.C. Schacht | Method of manufacturing abrasives | |
2,027,307 | Jan. 07, 1936 | E.C. Schacht | Method of coating and apparatus therefor and product | |
2,041,345 | May 19, 1936 | F.O. Jaques | Method of Making a Tool | tool making |
2,061,388 | Nov. 17, 1936 | T. Schou | Insulating Coil Winding | motor windings |
2,082,182 | Jun. 01, 1937 | E.C. Schacht | Manufacture of abrasive articles | |
2,085,995 | Jul. 06, 1937 | W.I. Patnode, E.J. Flynn | Insulated electrical conductor and method of making same | electric motors |
RE20,660 | Feb. 22, 1938 | E.C. Schacht | Method of coating and apparatus therefor and product | |