US2998984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling for plastic lined pipe
Assignee: Individual
•
Filing: 1957-11-04
•
Granted: 1961-09-05
•
Expires: 1977-11-04
Abstract
No abstract record available.
Inventors
- 👤 Gressel Edmond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:34
CPC Classifications
F; F16; F16L; F16L23/00; F16L23/16; F16L23/162; F16L19/00; F16L19/02; F16L19/0243; F16L23/12; F16L58/00; F16L58/18; F16L58/184
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1964-09-04 | 1965-03-06 | 1965-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-04 | 1969-03-06 | 1969-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-04 | 1973-03-06 | 1973-09-05 | $7700.00 | Window Closed / Lapsed |