US2463098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas-producing apparatus and method
Assignee: DANIEL AND FLORENCE GUGGENHEIM
•
Filing: 1942-02-09
•
Granted: 1949-03-01
•
Expires: 1962-02-09
Abstract
No abstract record available.
Inventors
- 👤 Robert H Goddard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:13
CPC Classifications
F; F17; F17C; F17C9/00; F17C9/02; F17C2265/00; F17C2265/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US670311A
Cited
US664958A
Cited
GB190726869A
Cited
FR464357A
Cited
US1423987A
Cited
US1441272A
Cited
US1496951A
Cited
FR661832A
Cited
US2033094A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-29 | 1952-08-30 | 1953-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-29 | 1956-08-30 | 1957-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-29 | 1960-08-30 | 1961-03-01 | $7700.00 | Window Closed / Lapsed |