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US2494264A
Expired / Lapsed
US
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Pressure electrolyzer
Assignee: Individual
•
Filing: 1947-04-26
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Granted: 1950-01-10
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Expires: 1967-04-26
Abstract
No abstract record available.
Inventors
- 👤 Rexford C Ryman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:21
CPC Classifications
C; C25; C25B; C25B9/00; C25B9/17; C25B9/19; C25B9/01; C25B9/015; C25B9/70; C25B9/73; C25B9/77
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US816355A
Cited
US1600478A
Cited
DE543757C
Cited
US1896718A
Cited
FR675754A
Cited
US2007096A
Cited
FR811238A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-09 | 1953-07-11 | 1954-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-09 | 1957-07-11 | 1958-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-09 | 1961-07-11 | 1962-01-10 | $7700.00 | Window Closed / Lapsed |