US2986648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical control circuit
Assignee: US Philips Corp
•
Filing: 1954-12-03
•
Granted: 1961-05-30
•
Expires: 1974-12-03
Abstract
No abstract record available.
Inventors
- 👤 Willems Ebertus
- 👤 Adrianus Johannes Wilhel Marie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:21
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/02; H02M7/04; H02M7/12; H02M7/21; H02M7/217; G; G05; G05B; G05B11/00; G05B11/01; G05B11/012
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2680160A
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US2666819A
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US2693568A
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US2644892A
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US2691073A
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US2728857A
Cited
US2812390A
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US2851592A
Cited
US2782267A
Cited
US2698392A
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US2774021A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-29 | 1964-11-28 | 1965-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-29 | 1968-11-28 | 1969-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-29 | 1972-11-28 | 1973-05-30 | $7700.00 | Window Closed / Lapsed |