US3494641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick claw-and flange coupling for pipes
Assignee: Individual
•
Filing: 1967-08-30
•
Granted: 1970-02-10
•
Expires: 1987-08-30
Abstract
No abstract record available.
Inventors
- 👤 Cesare Caregnato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:04
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/08; F16L37/12; F16L37/1205; F16L37/20; Y; Y10; Y10T; Y10T403/00; Y10T403/59; Y10T403/591; Y10T403/595
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1370790A
Cited
US1910706A
Cited
US2370354A
Cited
US2691201A
Cited
US2703723A
Cited
US2830830A
Cited
DE1216769B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-09 | 1973-08-11 | 1974-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-09 | 1977-08-11 | 1978-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-09 | 1981-08-11 | 1982-02-10 | $7700.00 | Window Closed / Lapsed |