US3467772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fm demodulator circuit for use in a facsimile system
Assignee: Philips North America LLC
•
Filing: 1966-03-18
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Granted: 1969-09-16
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Expires: 1986-03-18
Abstract
No abstract record available.
Inventors
- 👤 Paul J Crane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:05
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/00095; H03; H03D; H03D3/00; H03D3/02; H03D3/04; H04N1/40; H04N1/405; H04N1/4055; H04N1/4056
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3296539A
Cited
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 |