Number | Name | Date | Kind |
---|---|---|---|
3211232 | Grimmer | Oct 1965 | |
3552718 | Schwegman | Jan 1971 | |
3845815 | Garwood | Nov 1974 | |
3874634 | Gazda | Apr 1975 | |
4280561 | Fredd | Jul 1981 | |
4436152 | Fisher | Mar 1984 | |
5183114 | Mashaw, Jr. et al. | Feb 1993 | |
5211241 | Mashaw, Jr. et al. | May 1993 |
Entry |
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Otis Product and Services Catalog, Subsurface Wireline Equipment-Positioning Tools, 1989, p. 268. |
Otis Sales Brochure, Otis Sliding Side Door, Circulation/Production Device, 1985. |