Patent US3439944A successfully refreshed from Google Patents.
US3439944A
Expired / Lapsed
US
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Nipple for pipe joints
Assignee: Individual
•
Filing: 1966-04-29
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Granted: 1969-04-22
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Expires: 1986-04-29
Abstract
No abstract record available.
Inventors
- 👤 Bernhard Leutenegger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:52
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/08; F16L37/084; F16L37/0842; Y; Y10; Y10T; Y10T403/00; Y10T403/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA692526A
Cited
US1587079A
Cited
US2521701A
Cited
US2478976A
Cited
US3001673A
Cited
FR1407875A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |