Patent Grant
D321921
| Number | Name | Date | Kind |
|---|---|---|---|
| D300447 | Timleck | Mar 1989 | |
| 1485716 | Rogers | Mar 1924 | |
| 2027546 | Macdonald | Jan 1936 | |
| 2950748 | Olinghouse | Aug 1960 | |
| 3206067 | Smith, Jr. et al. | Sep 1965 | |
| 3281013 | Motard | Oct 1966 | |
| 3412897 | Slater | Nov 1968 | |
| 3717282 | Nordskog | Feb 1973 | |
| 4082209 | Sanders | Apr 1978 | |
| 4299345 | Lanzl | Nov 1981 | |
| 4610373 | Sherbondy | Sep 1986 |
| Number | Date | Country |
|---|---|---|
| 682899 | Nov 1952 | GBX |
| 1444066 | Jul 1974 | GBX |
