Patent US2592752A successfully refreshed from Google Patents.
US673991A
Expired / Lapsed
US
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Straightening and bending machine.
Assignee: PLUNGER ELEVATOR Co
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Filing: 1900-06-11
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Granted: 1901-05-14
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Expires: 1920-06-11
Abstract
No abstract record available.
Inventors
- 👤 George I Alden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:59
CPC Classifications
B; B21; B21D; B21D7/00; B21D7/06; B21D7/063
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1904-05-13 | 1904-11-12 | 1905-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1908-05-13 | 1908-11-12 | 1909-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1912-05-13 | 1912-11-12 | 1913-05-14 | $7700.00 | Window Closed / Lapsed |