US2771898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: McNeil Machine and Engineering Co
•
Filing: 1953-06-22
•
Granted: 1956-11-27
•
Expires: 1973-06-22
Abstract
No abstract record available.
Inventors
- 👤 Lutwin C Rotter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:20
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544; Y10T137/2557; Y10T137/2559; Y10T137/265; Y10T137/2663
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2578102A
Cited
US2687739A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-27 | 1960-05-28 | 1960-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-27 | 1964-05-28 | 1964-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-27 | 1968-05-28 | 1968-11-27 | $7700.00 | Window Closed / Lapsed |