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US2618344A
Expired / Lapsed
US
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Bridging plug
Assignee: Lane Wells Co
•
Filing: 1946-04-20
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Granted: 1952-11-18
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Expires: 1966-04-20
Abstract
No abstract record available.
Inventors
- 👤 George F Turechek
- 👤 Donald G Moorhouse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:14
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/13; E21B33/134
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1342927A
Cited
US1497629A
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US1549168A
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US2053448A
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US2050970A
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US2207448A
Cited
US2229635A
Cited
US2248908A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-18 | 1956-05-19 | 1956-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-18 | 1960-05-19 | 1960-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-18 | 1964-05-19 | 1964-11-18 | $7700.00 | Window Closed / Lapsed |