US3517357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic device having a short circuited turn
Assignee: Heinemann Electric Co
•
Filing: 1968-04-04
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Granted: 1970-06-23
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Expires: 1988-04-04
Abstract
No abstract record available.
Inventors
- 👤 Hal H Bakes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:47
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/12; H01H71/24; H01H71/34; H01H71/345; H01H71/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3081387A
Cited
US3307130A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-22 | 1973-12-22 | 1974-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-22 | 1977-12-22 | 1978-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-22 | 1981-12-22 | 1982-06-23 | $7700.00 | Window Closed / Lapsed |