US2906492A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valves
Assignee: Baker Hughes Oilfield Operations LLC
•
Filing: 1951-06-01
•
Granted: 1959-09-29
•
Expires: 1971-06-01
Abstract
No abstract record available.
Inventors
- 👤 Martin B Conrad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:07
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/06; F16K11/065; F16K11/07; F16K11/0712; F16K1/00; F16K1/32; F16K1/34; F16K1/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1706072A
Cited
CH177010A
Cited
US2115383A
Cited
US2360733A
Cited
US2501661A
Cited
US2445505A
Cited
GB615974A
Cited
US2506111A
Cited
US2524142A
Cited
US2496036A
Cited
US2505410A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |