Patent US2794213A successfully refreshed from Google Patents.
US744650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric-coil terminal.
Assignee: VARLEY DUPLEX MAGNET CO
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Filing: 1903-08-29
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Granted: 1903-11-17
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Expires: 1923-08-29
Abstract
No abstract record available.
Inventors
- 👤 Richard Varley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:29
CPC Classifications
H; H01; H01F; H01F5/00; H01F5/04
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) | 1906-11-16 | 1907-05-18 | 1907-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1910-11-16 | 1911-05-18 | 1911-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1914-11-16 | 1915-05-18 | 1915-11-17 | $7700.00 | Window Closed / Lapsed |