Patent US2892479A successfully refreshed from Google Patents.
US2892479A
Expired / Lapsed
US
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Pivoted sweeparm tube bender having bending shoe actuated by quadrilateral linkage
Assignee: Individual
•
Filing: 1955-10-27
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Granted: 1959-06-30
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Expires: 1975-10-27
Abstract
No abstract record available.
Inventors
- 👤 Charles H Holsclaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:43
CPC Classifications
B; B21; B21D; B21D7/00; B21D7/06; B21D7/066
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1389856A
Cited
US1794689A
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US1964550A
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US2405931A
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GB638150A
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GB676250A
Cited
US2763917A
Cited
US2754880A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-29 | 1962-12-29 | 1963-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-29 | 1966-12-29 | 1967-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-29 | 1970-12-29 | 1971-06-30 | $7700.00 | Window Closed / Lapsed |