US2724306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic spiraling machine for making electrical resistors
Assignee: Electra Manufacturing Co
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Filing: 1952-04-14
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Granted: 1955-11-22
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Expires: 1972-04-14
Abstract
No abstract record available.
Inventors
- 👤 Victor A Woodell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:57
CPC Classifications
B; B24; B24B; B24B19/00; B24B19/02; B24B19/022; B24B19/024; H; H01; H01C; H01C17/00; H01C17/22; H01C17/24; H01C17/245; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/300056; Y10T409/300448
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-21 | 1959-05-23 | 1959-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-21 | 1963-05-23 | 1963-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-21 | 1967-05-23 | 1967-11-22 | $7700.00 | Window Closed / Lapsed |