US1589435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanism for controlling the unwinding of strand material and guiding the same
Assignee: VARLEY DUPLEX MAGNET CO
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Filing: 1923-10-31
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Granted: 1926-06-22
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Expires: 1943-10-31
Abstract
No abstract record available.
Inventors
- 👤 Mary V Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:08
CPC Classifications
B; B65; B65H; B65H59/00; B65H59/02; B65H59/04; H; H01; H01F; H01F41/00; H01F41/02; H01F41/04; H01F41/06; H01F41/094
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) | 1929-06-21 | 1929-12-21 | 1930-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-06-21 | 1933-12-21 | 1934-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-06-21 | 1937-12-21 | 1938-06-22 | $7700.00 | Window Closed / Lapsed |