US2903235A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valves
Assignee: American Iron & Machine Works
•
Filing: 1954-06-21
•
Granted: 1959-09-08
•
Expires: 1974-06-21
Abstract
No abstract record available.
Inventors
- 👤 Rodgers Otis Ned
- 👤 Wallace F Olson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:33
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/10; F04B53/102; F04B53/1022; F04B53/1025; F04B53/1087; F16; F16K; F16K1/00; F16K1/32; F16K1/34; F16K1/46; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/7913; Y10T137/7915; Y10T137/7917
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1352735A
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US1781129A
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US1890247A
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US2093662A
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US2495880A
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US2457492A
Cited
US2605080A
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US2718373A
Cited
US2745631A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |