Patent US3551785A successfully refreshed from Google Patents.
US3551785A
Expired / Lapsed
US
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Regulation tube control apparatus with compensation of load current and grid current
Assignee: Honeywell Inc
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Filing: 1969-05-16
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Granted: 1970-12-29
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Expires: 1989-05-16
Abstract
No abstract record available.
Inventors
- 👤 John J Ferrara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:29
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/09; H01S3/097; H01S3/09705; G; G05; G05F; G05F1/00; G05F1/10; G05F1/46; G05F1/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-28 | 1974-06-29 | 1974-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-28 | 1978-06-29 | 1978-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-28 | 1982-06-29 | 1982-12-29 | $7700.00 | Window Closed / Lapsed |