Patent US2399544A successfully refreshed from Google Patents.
US2399544A
Expired / Lapsed
US
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Pipe-line repair plug
Assignee: Individual
•
Filing: 1944-06-03
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Granted: 1946-04-30
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Expires: 1964-06-03
Abstract
No abstract record available.
Inventors
- 👤 Harry S Danner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:39
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/10; F16L55/12; F16L55/128; F16L55/1283; Y; Y10; Y10S; Y10S118/00; Y10S118/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-04-29 | 1949-10-29 | 1950-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-04-29 | 1953-10-29 | 1954-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-04-29 | 1957-10-29 | 1958-04-30 | $7700.00 | Window Closed / Lapsed |