US2533531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylinder assembly
Assignee: Individual
•
Filing: 1945-07-24
•
Granted: 1950-12-12
•
Expires: 1965-07-24
Abstract
No abstract record available.
Inventors
- 👤 William T Stephens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:37
CPC Classifications
F; F16; F16J; F16J10/00; F16J10/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1572822A
Cited
US1820069A
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US2268543A
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US2154817A
Cited
US2145384A
Cited
US2197125A
Cited
US2230286A
Cited
US2299695A
Cited
US2349170A
Cited
US2390445A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |