US2904074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Decompression valve
Assignee: Electraulic Presses Ltd
•
Filing: 1956-02-20
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Granted: 1959-09-15
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Expires: 1976-02-20
Abstract
No abstract record available.
Inventors
- 👤 Towler Frank Hathorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:02
CPC Classifications
B; B30; B30B; B30B15/00; B30B15/16; B30B15/18; B30B15/186; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86718; Y10T137/86734; Y10T137/86928; Y10T137/86936; Y10T137/86944; Y10T137/86984; Y10T137/87917; Y10T137/88022; Y10T137/8803
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US433543A
Cited
US1712245A
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US1940668A
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US2187371A
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US2380631A
Cited
US2622397A
Cited
US2526800A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |