US3505657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torsional delay line and impressed flux linkage interaction device
Assignee: United States Department of the Navy
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Filing: 1965-07-20
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Granted: 1970-04-07
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Expires: 1985-07-20
Abstract
No abstract record available.
Inventors
- 👤 Harper J Whitehouse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:17
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/30; G; G11; G11C; G11C8/00; G11C8/005
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) | 1973-04-06 | 1973-10-06 | 1974-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-06 | 1977-10-06 | 1978-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-06 | 1981-10-06 | 1982-04-07 | $7700.00 | Window Closed / Lapsed |