Patent US2843154A successfully refreshed from Google Patents.
US2843154A
Expired / Lapsed
US
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Expansible plug for pipes
Assignee: HOSKING PATENT Corp
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Filing: 1955-06-27
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Granted: 1958-07-15
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Expires: 1975-06-27
Abstract
No abstract record available.
Inventors
- 👤 Oakley W Hosking
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:34
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/10; F16L55/12; F16L55/128; F16L55/132; F16L55/134; F16K; F16K7/00; F16K7/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US620520A
Cited
GB189514942A
Cited
US1077352A
Cited
US1906151A
Cited
GB513225A
Cited
US2299116A
Cited
US2474047A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-14 | 1962-01-13 | 1962-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-14 | 1966-01-13 | 1966-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-14 | 1970-01-13 | 1970-07-15 | $7700.00 | Window Closed / Lapsed |