Number | Name | Date | Kind |
---|---|---|---|
2602778 | Snyder et al. | Jul 1952 | |
2651500 | Teichmann | Sep 1953 | |
2681704 | Menaul | Jun 1954 | |
2801218 | Menaul | Jul 1957 | |
2807570 | Updegraff | Sep 1957 | |
3288211 | Johnston | Nov 1966 | |
3634227 | Patterson | Jan 1972 | |
3635797 | Battistoni | Jan 1972 | |
3684710 | Cayle et al. | Aug 1972 | |
4039028 | Knight | Aug 1977 | |
4414334 | Hitzman | Nov 1983 | |
4450908 | Hitzman | May 1984 | |
4940539 | Weber | Jul 1990 |
Entry |
---|
Bulletin issued by the American Petroleum Institute entitled "Oil and Gas Well Drilling Fluid Chemicals", API Bul. 13F (1st Ed. Aug. 1978). |