| Number | Name | Date | Kind |
|---|---|---|---|
| 785399 | Brandt | Mar 1905 | |
| 912225 | Bachrach | Feb 1909 | |
| 1114289 | Rittenhouse | Oct 1914 | |
| 1647140 | Ludy | Nov 1927 | |
| 2179884 | Falkoff | Nov 1939 | |
| 2423818 | Schmutzler | Jul 1947 | |
| 3715900 | Sherman | Feb 1973 | |
| 3956913 | Howard | May 1976 | |
| 4215497 | Levy | Aug 1980 | |
| 4358944 | Stoffel | Nov 1982 | |
| 4422315 | Klose | Dec 1983 |
| Number | Date | Country |
|---|---|---|
| 1223679 | Aug 1966 | DEX |
| Entry |
|---|
| W. H. Brady Co., Industrial Products Division, Bulletin No. MS-789 c 1982, p. 37, Front and Back Cover. |
| Panduit Corp., Electrical Products Group, Catalog E-CC7, c 1982, p. 28, Front and Back Cover. |