US2528796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve mechanism
Assignee: Old Carco LLC
•
Filing: 1944-12-29
•
Granted: 1950-11-07
•
Expires: 1964-12-29
Abstract
No abstract record available.
Inventors
- 👤 Robert F Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:46
CPC Classifications
B; B60; B60T; B60T11/00; B60T11/10; B60T11/16; B60T11/22; F; F16; F16K; F16K15/00; F16K15/14; F16K15/144; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7771; Y10T137/7772; Y10T137/7773
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1841354A
Cited
US1885121A
Cited
US1964249A
Cited
US2009104A
Cited
US2011812A
Cited
US2135004A
Cited
US2133575A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-06 | 1954-05-08 | 1954-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-06 | 1958-05-08 | 1958-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-06 | 1962-05-08 | 1962-11-07 | $7700.00 | Window Closed / Lapsed |