US3025798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas anchor with pilot operated control valve
Assignee: Kobe Inc
•
Filing: 1959-07-06
•
Granted: 1962-03-20
•
Expires: 1979-07-06
Abstract
No abstract record available.
Inventors
- 👤 Clarence J Coberly
- 👤 Ralph F Mcarthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:16
CPC Classifications
F; F04; F04B; F04B47/00; F04B47/02; F04B47/04; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7339
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2230787A
Cited
US2338903A
Cited
US2311157A
Cited
US2674192A
Cited
US2714855A
Cited
US2649738A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-19 | 1965-09-18 | 1966-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-19 | 1969-09-18 | 1970-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-19 | 1973-09-18 | 1974-03-20 | $7700.00 | Window Closed / Lapsed |