US3434055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
A.c. bridge circuit for determining the optimum operating condition of a d.c. generator
Assignee: Philips North America LLC
•
Filing: 1962-11-27
•
Granted: 1969-03-18
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Expires: 1982-11-27
Abstract
No abstract record available.
Inventors
- 👤 German Frick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:18
CPC Classifications
H; H10; H10P; H10P95/00; G; G01; G01R; G01R31/00; G01R31/34; G01R31/343; H10F; H10F99/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3128879A
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US2806193A
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US2844775A
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US2968180A
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US3000385A
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US3137392A
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US3117899A
Cited
US3182252A
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US3150021A
Cited
US3062223A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-17 | 1972-09-16 | 1973-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-17 | 1976-09-16 | 1977-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-17 | 1980-09-16 | 1981-03-18 | $7700.00 | Window Closed / Lapsed |