US2469111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locked coupling
Assignee: HARRY E KARR
•
Filing: 1947-12-26
•
Granted: 1949-05-03
•
Expires: 1967-12-26
Abstract
No abstract record available.
Inventors
- 👤 Hiram R Harding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:34
CPC Classifications
F; F16; F16L; F16L19/00; F16L19/02; F16L19/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US769380A
Cited
US1166538A
Cited
US1175283A
Cited
US1179110A
Cited
US1811736A
Cited
US2376058A
Cited
US2371971A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-02 | 1952-11-01 | 1953-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-02 | 1956-11-01 | 1957-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-02 | 1960-11-01 | 1961-05-03 | $7700.00 | Window Closed / Lapsed |