Patent US2900091A successfully refreshed from Google Patents.
US2900091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe handling equipment
Assignee: Individual
•
Filing: 1955-12-05
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Granted: 1959-08-18
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Expires: 1975-12-05
Abstract
No abstract record available.
Inventors
- 👤 John O Minter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:23
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)
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US362103A
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US673258A
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US706294A
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US1330099A
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US1571360A
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AT116424B
Cited
US1707998A
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US2231087A
Cited
US2535979A
Cited
US2631741A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-17 | 1963-02-16 | 1963-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-17 | 1967-02-16 | 1967-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-17 | 1971-02-16 | 1971-08-18 | $7700.00 | Window Closed / Lapsed |