US2643006A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic pipe handler
Assignee: Individual
•
Filing: 1949-09-28
•
Granted: 1953-06-23
•
Expires: 1969-09-28
Abstract
No abstract record available.
Inventors
- 👤 William R King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:00
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/14; E21B19/15; E21B19/155
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US845152A
Cited
US1922980A
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US1829879A
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US2113270A
Cited
US2278035A
Cited
US2397192A
Cited
US2558554A
Cited
US2535546A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |