US2997327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe lifting tool
Assignee: Reed Manufacturing Co
•
Filing: 1957-05-22
•
Granted: 1961-08-22
•
Expires: 1977-05-22
Abstract
No abstract record available.
Inventors
- 👤 Bengt G Bjalme
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:21
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/02; E21B19/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US303408A
Cited
US951816A
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US1627733A
Cited
US1551214A
Cited
US2079491A
Cited
US2340868A
Cited
US2481610A
Cited
US2650852A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |