US2987669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hall effect electromechanical sensing device
Assignee: Gulton Industries Inc
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Filing: 1959-01-19
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Granted: 1961-06-06
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Expires: 1979-01-19
Abstract
No abstract record available.
Inventors
- 👤 Heinz E Kallmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:08
CPC Classifications
G; G01; G01P; G01P15/00; G01P15/02; G01P15/08; G01P15/105; G01D; G01D5/00; G01D5/12; G01D5/14; G01D5/142; Y; Y10; Y10S; Y10S73/00; Y10S73/03
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) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |