Patent Grant
D273429
| Number | Name | Date | Kind |
|---|---|---|---|
| D241860 | Calamia | Oct 1976 | |
| D252288 | Kilham | Jul 1979 | |
| D262917 | Kilham | Feb 1982 | |
| 1469340 | Shortell | Oct 1923 | |
| 2591126 | Breek, Jr. | Apr 1952 | |
| 2786446 | Newman | Mar 1957 | |
| 2789534 | Landgraf | Apr 1957 | |
| 2987041 | Brad | Jun 1961 | |
| 3012539 | Warren | Dec 1961 | |
| 3372676 | Williams | Mar 1968 | |
| 4144842 | Schlising | Mar 1979 |
