US2894715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: Otis Engineering Corp
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Filing: 1956-09-05
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Granted: 1959-07-14
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Expires: 1976-09-05
Abstract
No abstract record available.
Inventors
- 👤 James H Bostock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:51
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/06; E; E21; E21B; E21B34/00; E21B34/06; E21B34/10; E21B2200/00; E21B2200/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-13 | 1963-01-12 | 1963-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-13 | 1967-01-12 | 1967-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-13 | 1971-01-12 | 1971-07-14 | $7700.00 | Window Closed / Lapsed |