US2964340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary conduit seal
Assignee: ConocoPhillips Co
•
Filing: 1957-12-20
•
Granted: 1960-12-13
•
Expires: 1977-12-20
Abstract
No abstract record available.
Inventors
- 👤 Ora A Kinzie
- 👤 Hubert J Watts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:53
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2250311A
Cited
US2311494A
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US2462006A
Cited
US2619040A
Cited
US2717166A
Cited
US2705177A
Cited
US2777702A
Cited
US2789843A
Cited
GB759627A
Cited
US2760794A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |