US2970633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe bending machine
Assignee: Individual
•
Filing: 1956-02-21
•
Granted: 1961-02-07
•
Expires: 1976-02-21
Abstract
No abstract record available.
Inventors
- 👤 Sam L Ballard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:35
CPC Classifications
B; B21; B21D; B21D7/00; B21D7/02; B21D7/022; B21D7/0225
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1741840A
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US1816218A
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US2346371A
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US2347593A
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US2491893A
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US2525403A
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US2547870A
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US2740453A
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US2589651A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-07 | 1964-08-08 | 1965-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-07 | 1968-08-08 | 1969-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-07 | 1972-08-08 | 1973-02-07 | $7700.00 | Window Closed / Lapsed |