US2988075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined pressure regulator and fuel heater and vaporizer
Assignee: Ambac International Corp
•
Filing: 1959-06-12
•
Granted: 1961-06-13
•
Expires: 1979-06-12
Abstract
No abstract record available.
Inventors
- 👤 Roy F Ensign
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:18
CPC Classifications
F; F02; F02M; F02M21/00; F02M21/02; F02M21/0218; F02M21/023; F02M21/0239; F02M21/06; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |