US3406388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic indicator having permanent magnet mounted on rotating shaft
Assignee: Minelco Inc
•
Filing: 1965-09-28
•
Granted: 1968-10-15
•
Expires: 1985-09-28
Abstract
No abstract record available.
Inventors
- 👤 George E Pihl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:59
CPC Classifications
G; G08; G08B; G08B5/00; G08B5/22; G08B5/24; G08B5/06; G08B5/18; G08B5/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2245493A
Cited
US2452034A
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US2740956A
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US3140431A
Cited
US3026512A
Cited
US3074060A
Cited
US3210758A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-15 | 1972-04-15 | 1972-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-15 | 1976-04-15 | 1976-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-15 | 1980-04-15 | 1980-10-15 | $7700.00 | Window Closed / Lapsed |