Patent US2631930A successfully refreshed from Google Patents.
US2631930A
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US
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Inflammable gas producing apparatus
Assignee: Individual
•
Filing: 1948-09-30
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Granted: 1953-03-17
•
Expires: 1968-09-30
Abstract
No abstract record available.
Inventors
- 👤 Peters Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:58
CPC Classifications
C; C10; C10B; C10B53/00; C10B53/02; C10B19/00; Y; Y02; Y02E; Y02E50/00; Y02E50/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US901232A
Cited
GB121146A
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US1634480A
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US1657371A
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US1937552A
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US2094946A
Cited
US1938121A
Cited
US2111579A
Cited
DE663025C
Cited
US2388348A
Cited
US2445327A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-16 | 1956-09-15 | 1957-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-16 | 1960-09-15 | 1961-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-16 | 1964-09-15 | 1965-03-17 | $7700.00 | Window Closed / Lapsed |