US2793783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe sealing device
Assignee: Individual
•
Filing: 1955-07-14
•
Granted: 1957-05-28
•
Expires: 1975-07-14
Abstract
No abstract record available.
Inventors
- 👤 Walter C Hutton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:51
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/10; F16L55/12; F16L55/128; F16L55/132
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US543745A
Cited
US1050557A
Cited
US1185116A
Cited
US1446223A
Cited
US1997878A
Cited
US1993307A
Cited
US2661762A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-27 | 1960-11-26 | 1961-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-27 | 1964-11-26 | 1965-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-27 | 1968-11-26 | 1969-05-28 | $7700.00 | Window Closed / Lapsed |