Patent US2525597A successfully refreshed from Google Patents.
US2525597A
Expired / Lapsed
US
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Apparatus for producing combustible gas
Assignee: Individual
•
Filing: 1946-08-14
•
Granted: 1950-10-10
•
Expires: 1966-08-14
Abstract
No abstract record available.
Inventors
- 👤 Frazey Donald Wooster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:22
CPC Classifications
F; F23; F23K; F23K5/00; F23K5/02; F23K5/14; F23K5/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US174054A
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US206453A
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US354709A
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US695399A
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GB190929607A
Cited
US1069335A
Cited
US1103789A
Cited
CH79769A
Cited
US1916577A
Cited
US2000443A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |