All Patents of Type: locks |
Patents 1 -
15
of 22
|
Number | Date | Patentee | Title | Type |
NX-182,505,141 | May 14, 1827 | J. Van Dorn | Safety gate for canals | locks |
4,958X | Jan. 04, 1828 | W. Kendall, D. Rogers | Making locks in canals | locks |
7,358X | Dec. 31, 1832 | J. Dewees | Saving water in passing boats through canal locks | locks |
1,323 | Sep. 14, 1839 | W. Stillman | Safety-door lock | locks |
45,014 | Nov. 15, 1864 | H.H. Baker | Improvement in locks | locks |
52,995 | Mar. 06, 1866 | A. Hardy, F.L. Walker, G.A. Walker | Improvement in locks | locks |
64,605 | May 07, 1867 | S. Wheeler | Improvement in permutation locks | locks |
68,922 | Sep. 17, 1867 | S. Wheeler | Improvement in permutation locks | locks |
85,345 | Dec. 29, 1868 | W.H. Sullenberger | Improvement in sash stop and lock | locks |
CA-30 | Sep. 07, 1869 | J.W. Jacobs | Improvements in locks | locks |
CA-31 | Sep. 07, 1869 | C. Mee, W. Bentley | Improvements in locks | locks |
115,231 | May 23, 1871 | J. Obernesser | Improvement in permutation-locks | locks |
262,977 | Aug. 22, 1882 | M.L. Orum | Lock-case | locks |
367,436 | Aug. 02, 1887 | M.L. Orum | Mortise-lock | locks |
741,685 | Oct. 20, 1903 | F.W. Lindgren | Lock | locks |