US2612389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valved pipe coupling
Assignee: Individual
•
Filing: 1950-08-01
•
Granted: 1952-09-30
•
Expires: 1970-08-01
Abstract
No abstract record available.
Inventors
- 👤 Jr William F Macglashan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:57
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/28; F16L37/38; F16L37/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US768965A
Cited
US999392A
Cited
US1118506A
Cited
US1968421A
Cited
US2356326A
Cited
US2398170A
Cited
US2393679A
Cited
US2471237A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-30 | 1956-03-31 | 1956-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-30 | 1960-03-31 | 1960-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-30 | 1964-03-31 | 1964-09-30 | $7700.00 | Window Closed / Lapsed |