US2823935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe coupling with deformable ring for flareless pipe
Assignee: Individual
•
Filing: 1953-01-23
•
Granted: 1958-02-18
•
Expires: 1973-01-23
Abstract
No abstract record available.
Inventors
- 👤 Paul D Wurzburger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:56
CPC Classifications
F; F16; F16L; F16L19/00; F16L19/08; F16L19/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2211856A
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US2171217A
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US2201404A
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US2452278A
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US2522785A
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US2640716A
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US2585453A
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US2641487A
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US2693374A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-17 | 1961-08-19 | 1962-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-17 | 1965-08-19 | 1966-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-17 | 1969-08-19 | 1970-02-18 | $7700.00 | Window Closed / Lapsed |