US2983527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe coupling having gasket expanding means
Assignee: Individual
•
Filing: 1954-07-07
•
Granted: 1961-05-09
•
Expires: 1974-07-07
Abstract
No abstract record available.
Inventors
- 👤 Edward H Schustack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:06
CPC Classifications
F; F16; F16L; F16L17/00; F16L17/10; F16L27/00; F16L27/12; F16L27/127; Y; Y10; Y10S; Y10S285/00; Y10S285/91
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US865497A
Cited
US1800085A
Cited
US2099722A
Cited
US2177184A
Cited
US2469772A
Cited
US2462348A
Cited
US2502351A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |