US3467770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual channel automatic control circuit
Assignee: HOFFMAN PRODUCTS CORP
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Filing: 1966-06-17
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Granted: 1969-09-16
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Expires: 1986-06-17
Abstract
No abstract record available.
Inventors
- 👤 Du Monte Otto Voigt
- 👤 Richard Avicola
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:15
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/64; H04N9/70; H04N9/71
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) | 1972-09-15 | 1973-03-17 | 1973-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-15 | 1977-03-17 | 1977-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-15 | 1981-03-17 | 1981-09-16 | $7700.00 | Window Closed / Lapsed |