US2644664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: Crane Co
•
Filing: 1947-12-22
•
Granted: 1953-07-07
•
Expires: 1967-12-22
Abstract
No abstract record available.
Inventors
- 👤 Hansen George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:31
CPC Classifications
F; F16; F16K; F16K41/00; F16K41/10; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/6161; Y10T137/6164; Y10T137/6178; Y10T137/6851; Y10T137/7036
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE40079C
Cited
US21858A
Cited
US48721A
Cited
US347156A
Cited
US1602047A
Cited
FR603632A
Cited
US1971186A
Cited
US2226972A
Cited
US2444471A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-06 | 1957-01-05 | 1957-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-06 | 1961-01-05 | 1961-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-06 | 1965-01-05 | 1965-07-07 | $7700.00 | Window Closed / Lapsed |