US3544795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-optical signal transfer apparatus
Assignee: Zenith Electronics LLC
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Filing: 1967-12-11
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Granted: 1970-12-01
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Expires: 1987-12-11
Abstract
No abstract record available.
Inventors
- 👤 Adrianus Korpel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:06
CPC Classifications
H; H04; H04B; H04B10/00; H04B10/60; H04B10/61; H04B10/64; G; G02; G02F; G02F2/00; G02F2/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3462603A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-30 | 1974-06-01 | 1974-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-30 | 1978-06-01 | 1978-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-30 | 1982-06-01 | 1982-12-01 | $7700.00 | Window Closed / Lapsed |