US2578933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling
Assignee: HUNTER
•
Filing: 1947-12-02
•
Granted: 1951-12-18
•
Expires: 1967-12-02
Abstract
No abstract record available.
Inventors
- 👤 Robert H Hunter
- 👤 Elmer J Kasper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:47
CPC Classifications
F; F16; F16L; F16L27/00; F16L27/10; F16L27/1008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE20782E
Cited
US1005123A
Cited
US1122246A
Cited
US2282738A
Cited
US2366161A
Cited
US2431120A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-17 | 1955-06-18 | 1955-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-17 | 1959-06-18 | 1959-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-17 | 1963-06-18 | 1963-12-18 | $7700.00 | Window Closed / Lapsed |