US3454775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Information decoding apparatus employing a frequency sensitive light responsive receiver
Assignee: International Business Machines Corp
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Filing: 1964-12-30
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Granted: 1969-07-08
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Expires: 1984-12-30
Abstract
No abstract record available.
Inventors
- 👤 Doyle C Gibbs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:48
CPC Classifications
H; H04; H04B; H04B10/00; H04B10/11; H04B10/112; H04B10/1121; G; G01; G01S; G01S13/00; G01S13/02; G01S13/50; G01S13/58; G01S13/585; G01S13/587; G01S17/00; G01S17/02; G01S17/50; G01S7/00; G01S7/48; G01S7/497; G02; G02B; G02B26/00; G02F; G02F2/00
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) | 1972-07-07 | 1973-01-06 | 1973-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-07 | 1977-01-06 | 1977-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-07 | 1981-01-06 | 1981-07-08 | $7700.00 | Window Closed / Lapsed |