Number | Name | Date | Kind |
---|---|---|---|
2618468 | Lundeen | Nov 1952 | |
2989880 | Hesser et al. | Jun 1961 | |
3180186 | Catland | Apr 1965 | |
3380323 | Campbell | Feb 1966 | |
3589742 | Flick | Jun 1971 | |
3635105 | Dickmann et al. | Jan 1972 | |
4246809 | Keast et al. | Jan 1981 | |
4250773 | Haynes et al. | Feb 1981 | |
4297922 | Higdon | Nov 1981 | |
4346629 | Kinzbach | Aug 1982 | |
4357843 | Peck et al. | Nov 1982 | |
5044232 | Schulze-Beckinghausen | Sep 1991 |
Entry |
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"Hydraulic Power Tongs Operation and Service Instructions," by Eckel Mfg. Co. Inc., 1979. |
"Model 4.5-08 Hydraulic Power Tong," Weatherford Power Equipment, 1988. |
"Model 4.5 Hydraulic Power Tong," Weatherford Oilfield Power Equipment, 1983. |