US2540368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flareless tube and pipe coupling
Assignee: HARRY E KARR
•
Filing: 1948-03-19
•
Granted: 1951-02-06
•
Expires: 1968-03-19
Abstract
No abstract record available.
Inventors
- 👤 Hiram R Harding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:24
CPC Classifications
F; F16; F16L; F16L19/00; F16L19/08; F16L19/083; F16L19/086
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US115658A
Cited
US793414A
Cited
US1712273A
Cited
FR859875A
Cited
US2351363A
Cited
US2412664A
Cited
US2455667A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-05 | 1954-08-07 | 1955-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-05 | 1958-08-07 | 1959-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-05 | 1962-08-07 | 1963-02-06 | $7700.00 | Window Closed / Lapsed |