Patent US3550085A successfully refreshed from Google Patents.
US3550085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Information system using arrays of multiple spot patterns
Assignee: Individual
•
Filing: 1967-01-30
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Granted: 1970-12-22
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Expires: 1987-01-30
Abstract
No abstract record available.
Inventors
- 👤 Daniel Silverman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:26
CPC Classifications
G; G11; G11C; G11C13/00; G11C13/04; G11C13/042; G03; G03H; G03H1/00; G03H1/26; G06; G06K; G06K7/00; G06K7/10; G11B; G11B20/00; G11B20/02; G11B5/00; G11B5/02; G11B5/09; G11B5/48; G11B5/49; G11B7/00; G11B7/002; G11B7/003; G11B7/0031
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3111645A
Cited
US3064519A
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US3158846A
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US3317713A
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US3305669A
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US3392400A
Cited
US3325789A
Cited
US3427586A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |