US3038539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for sampling well fluids
Assignee: AIRCUSHION PATENTS Corp
•
Filing: 1957-08-09
•
Granted: 1962-06-12
•
Expires: 1977-08-09
Abstract
No abstract record available.
Inventors
- 👤 Bloom Dolores Floyd
- 👤 John L Dickmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:08
CPC Classifications
E; E21; E21B; E21B49/00; E21B49/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2850097A
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US2950759A
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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) | 1965-06-11 | 1965-12-11 | 1966-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-11 | 1969-12-11 | 1970-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-11 | 1973-12-11 | 1974-06-12 | $7700.00 | Window Closed / Lapsed |