US2496172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe holding slip
Assignee: Individual
•
Filing: 1945-12-05
•
Granted: 1950-01-31
•
Expires: 1965-12-05
Abstract
No abstract record available.
Inventors
- 👤 William L Pearce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:26
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1733010A
Cited
US1754344A
Cited
US1966906A
Cited
US1999519A
Cited
US2051998A
Cited
US2068217A
Cited
US2156384A
Cited
US2208926A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-30 | 1953-08-01 | 1954-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-30 | 1957-08-01 | 1958-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-30 | 1961-08-01 | 1962-01-31 | $7700.00 | Window Closed / Lapsed |