US2686685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible sealed coupling for tubular elements
Assignee: Individual
•
Filing: 1950-07-03
•
Granted: 1954-08-17
•
Expires: 1970-07-03
Abstract
No abstract record available.
Inventors
- 👤 David A Shoemaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:48
CPC Classifications
F; F16; F16L; F16L27/00; F16L27/10; F16L27/1017
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB319991A
Cited
US2080220A
Cited
US2326455A
Cited
US2319939A
Cited
US2465708A
Cited
US2457908A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-16 | 1958-02-15 | 1958-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-16 | 1962-02-15 | 1962-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-16 | 1966-02-15 | 1966-08-17 | $7700.00 | Window Closed / Lapsed |