US2942614A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inflation valve
Assignee: Halkey Roberts Corp
•
Filing: 1958-11-03
•
Granted: 1960-06-28
•
Expires: 1978-11-03
Abstract
No abstract record available.
Inventors
- 👤 Lardner George Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:35
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/20; F16K15/202; F16K15/14; F16K15/144; Y; Y10; Y10T; Y10T137/00; Y10T137/3584
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE336530C
Cited
US1910961A
Cited
US2586455A
Cited
US2604297A
Cited
US2640481A
Cited
US2681097A
Cited
US2760551A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |