US2871670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of liquefied gas pumping
Assignee: North American Aviation Corp
•
Filing: 1953-04-20
•
Granted: 1959-02-03
•
Expires: 1973-04-20
Abstract
No abstract record available.
Inventors
- 👤 Dieter K Huzel
- 👤 Robert M Shuman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:29
CPC Classifications
F; F04; F04D; F04D9/00; F04B; F04B15/00; F04B15/06; F04B15/08; F04B53/00; F04B53/10; F04B53/1037; F16; F16L; F16L59/00; F16L59/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1160703A
Cited
US1739161A
Cited
US2340747A
Cited
US2306298A
Cited
US2332694A
Cited
US2601763A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-02 | 1962-08-04 | 1963-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-02 | 1966-08-04 | 1967-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-02 | 1970-08-04 | 1971-02-03 | $7700.00 | Window Closed / Lapsed |