Number | Name | Date | Kind |
---|---|---|---|
1799677 | Ziegler | Apr 1931 | |
1906313 | Clifford | May 1933 | |
2994343 | Banks | Aug 1961 | |
3278156 | Callahan, Jr. et al. | Oct 1966 | |
3491789 | Callahan et al. | Jan 1970 | |
3787023 | Shufflebarger et al. | Jan 1974 | |
4099703 | Lush | Jul 1978 | |
4240610 | Trimble | Dec 1980 |
Number | Date | Country |
---|---|---|
373832 | Apr 1939 | ITX |
1417343 | Dec 1975 | GBX |
Entry |
---|
"Manually Operated Bellows Valves", Nupro Co., Willoughby, Ohio, 1973. |