Patent US3480919A successfully refreshed from Google Patents.
US3480919A
Expired / Lapsed
US
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Photographic information storage optical tracking and switching system
Assignee: International Business Machines Corp
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Filing: 1965-11-22
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Granted: 1969-11-25
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Expires: 1985-11-22
Abstract
No abstract record available.
Inventors
- 👤 Roy A Jensen
- 👤 Ira B Oldham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:27
CPC Classifications
G; G11; G11C; G11C13/00; G11C13/04; G06; G06K; G06K11/00; G06K11/02; G11B; G11B21/00; G11B21/02; G11B21/08; G11B21/081; G11B21/086; G11B21/088; G11B7/00; G11B7/002; G11B7/0033; G11B7/08; G11B7/085
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) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |