US3241295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drilling mud degassers for oil wells
Assignee: Bass Brothers Enterprises Inc
•
Filing: 1963-09-11
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Granted: 1966-03-22
•
Expires: 1983-09-11
Abstract
No abstract record available.
Inventors
- 👤 Iii Phil H Griffin
- 👤 Jr John W Melton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:38
CPC Classifications
E; E21; E21B; E21B21/00; E21B21/06; E21B21/063; E21B21/067
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
IN A MUD DEGASSER APPARATUS, THE COMBINATION OF A MUD DEGASSER VACUUM TANK HAVING A MUD INLET AND A MUD OUTLET FOR CONTINUOUS FLOW OF MUD THROUGH THE TANK, MEANS FOR MAINTAINING THE INTERIOR OF SAID TANK AT SUB- ATMOSPHERIC PRESSURE, VALVE MEANS PROVIDED IN SAID MUD INLET FOR CONTROLLING THE RATE OF FLOW OF MUD INTO THE TANK,
Claim 2
Dependent Claim
59 words
IN A MUD DEGASSER APPARATUS, THE COMBINATION OF A MUD DEGASSER VACUUM TANK HAVING A MUD INLET AND A MUD OUTLET FOR CONTINUOUS FLOW OF MUD THROUGH THE TANK, MEANS FOR MAINTAINING THE INTERIOR OF SAID TANK AT SUB- ATMOSPHERIC PRESSURE, VALVE MEANS PROVIDED IN SAID MUD INLET FOR CONTROLLING THE RATE OF FLOW OF MUD INTO THE TANK,
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |