US3544934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Proximity switch-type control means
Assignee: Siemens Electromechanical Components Inc
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Filing: 1969-05-08
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Granted: 1970-12-01
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Expires: 1989-05-08
Abstract
No abstract record available.
Inventors
- 👤 Theodore E Poliakoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:28
CPC Classifications
H; H01; H01H; H01H36/00; H01H36/0006; H01H36/0033; H01H36/0013; H01H36/0026; H01H36/0046; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49105
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) | 1973-11-30 | 1974-06-01 | 1974-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-30 | 1978-06-01 | 1978-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-30 | 1982-06-01 | 1982-12-01 | $7700.00 | Window Closed / Lapsed |