US2744217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical apparatus
Assignee: Fansteel Inc
•
Filing: 1951-09-29
•
Granted: 1956-05-01
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Expires: 1971-09-29
Abstract
No abstract record available.
Inventors
- 👤 Oliver S Aikman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:27
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/004; H01G9/08; H01G9/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US855080A
Cited
US1979916A
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US2299228A
Cited
US2422046A
Cited
US2500632A
Cited
US2569925A
Cited
US2617863A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |