Patent US2858872A successfully refreshed from Google Patents.
US2858872A
Expired / Lapsed
US
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Means and method for applying tension to sheet metal
Assignee: Individual
•
Filing: 1954-09-24
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Granted: 1958-11-04
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Expires: 1974-09-24
Abstract
No abstract record available.
Inventors
- 👤 Everett D Hougen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:25
CPC Classifications
B; B21; B21D; B21D1/00; B21D1/12; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49799
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2608730A
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DK53591A
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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) | 1961-11-03 | 1962-05-05 | 1962-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-03 | 1966-05-05 | 1966-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-03 | 1970-05-05 | 1970-11-04 | $7700.00 | Window Closed / Lapsed |