US3316447A
Expired / Lapsed
US
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Inductively energized unit with means to impede primary current flow
Assignee: STRONG ELECTRIC CORP
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Filing: 1964-03-06
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Granted: 1967-04-25
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Expires: 1984-03-06
Abstract
No abstract record available.
Inventors
- 👤 Alexander E Hochstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 23:12
CPC Classifications
B; B64; B64F; B64F1/00; B64F1/18; B64F1/20; B64F1/205; F; F21; F21V; F21V23/00; F21V23/02; F21V25/00; F21V25/02; F21V25/04; F21V31/00; F21V31/04; H; H05; H05B; H05B47/00; H05B47/10; F21W; F21W2111/00; F21W2111/06; H02; H02J; H02J50/00; H02J50/10
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) | 1970-04-24 | 1970-10-24 | 1971-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-24 | 1974-10-24 | 1975-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-24 | 1978-10-24 | 1979-04-25 | $7700.00 | Window Closed / Lapsed |