Number | Name | Date | Kind |
---|---|---|---|
442856 | Carty | Dec 1890 | |
2943272 | Feldman | Jun 1960 | |
3496555 | Jones | Feb 1970 | |
3757028 | Schessel | Sep 1973 | |
3761842 | Crandrud | Sep 1973 | |
3891815 | Hiele | Jun 1975 | |
4367908 | Johnston | Jan 1983 | |
4413469 | Paquin | Nov 1983 | |
4481379 | Bolick | Nov 1984 | |
4689441 | Dick | Aug 1987 | |
4767338 | Dennis et al. | Aug 1988 | |
4785135 | Ecker | Nov 1988 | |
4831497 | Webster | May 1989 | |
4850887 | Sugawara | Jul 1989 | |
5027088 | Shimizu | Jun 1991 | |
5039824 | Takashima | Aug 1991 | |
5124567 | Fujita | Jun 1992 | |
5186647 | Denkmann | Feb 1993 | |
5226835 | Baker | Jul 1993 | |
5269708 | De Young | Dec 1993 | |
5295869 | Siemon | Mar 1994 | |
5299956 | Brownell | Apr 1994 | |
5414393 | Rose | May 1995 | |
5432484 | Klas | Jul 1995 | |
5618185 | Aekins | Apr 1997 | |
5743750 | Sullivan et al. | Apr 1998 |
Number | Date | Country |
---|---|---|
0525703 | Feb 1983 | EPX |
1382013 | Jan 1975 | GBX |
1440392 | Jun 1976 | GBX |
1449209 | Sep 1976 | GBX |
2089122 | Jun 1983 | GBX |
Entry |
---|
Principles of Electricity applied to Telephone and Telegraph Work, American Telephone and Telegraph Co., Jun. 1961. |