US2812154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: Individual
•
Filing: 1953-01-22
•
Granted: 1957-11-05
•
Expires: 1973-01-22
Abstract
No abstract record available.
Inventors
- 👤 Nordstrand Sven Gosta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:09
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US109730A
Cited
US237854A
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US393536A
Cited
US588765A
Cited
US756491A
Cited
US957347A
Cited
US1171189A
Cited
US2348083A
Cited
US2534577A
Cited
GB623696A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-04 | 1961-05-06 | 1961-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-04 | 1965-05-06 | 1965-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-04 | 1969-05-06 | 1969-11-05 | $7700.00 | Window Closed / Lapsed |