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US2540451A
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Pipe aligning device
Assignee: Individual
•
Filing: 1946-04-13
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Granted: 1951-02-06
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Expires: 1966-04-13
Abstract
No abstract record available.
Inventors
- 👤 Benjamin F Kelley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:47
CPC Classifications
E; E21; E21B; E21B19/00; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53909; Y10T29/53913; Y10T29/53917
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1083341A
Cited
GB204454A
Cited
US1884874A
Cited
US1900921A
Cited
US1967517A
Cited
US2184051A
Cited
US2275813A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-05 | 1954-08-07 | 1955-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-05 | 1958-08-07 | 1959-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-05 | 1962-08-07 | 1963-02-06 | $7700.00 | Window Closed / Lapsed |