Patent Grant
D319764
| Number | Name | Date | Kind |
|---|---|---|---|
| 817090 | Pfeiffer | Apr 1906 | |
| 841472 | Vanderherchen | Jan 1907 | |
| 985087 | Wilson | Feb 1911 | |
| 1504148 | Rudolph | Aug 1924 | |
| 1611154 | Bertrand | Dec 1926 | |
| 2231323 | Cawood | Feb 1941 | |
| 2599668 | Taylor | Jun 1952 | |
| 3010346 | Kulp | Nov 1961 | |
| 3086414 | Nardi | Apr 1963 | |
| 3151512 | Charczenko | Oct 1964 | |
| 4357845 | Cornia | Nov 1982 | |
| 4446763 | Blough et al. | May 1984 | |
| 4602532 | Unger | Jul 1986 | |
| 4689881 | Fall | Sep 1987 | |
| 4724731 | Onofrio | Feb 1988 | |
| 4823650 | Tuttle | Apr 1989 | |
| 4836065 | Setliff | Jun 1989 | |
| 4967614 | Van Horssen | Nov 1990 | |
| 4984489 | Krauthamer | Jan 1991 |
