US2624610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansible elevator plug
Assignee: LEE MURPHY
•
Filing: 1950-02-23
•
Granted: 1953-01-06
•
Expires: 1970-02-23
Abstract
No abstract record available.
Inventors
- 👤 Clauast R Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:40
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/02; E21B19/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1495557A
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US1897561A
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US2105885A
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US2261564A
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US2496360A
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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) | 1956-01-06 | 1956-07-07 | 1957-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-06 | 1960-07-07 | 1961-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-06 | 1964-07-07 | 1965-01-06 | $7700.00 | Window Closed / Lapsed |