US3510658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light beam servoing system with memory element having wavelength-discrimi-nating guide and data tracks
Assignee: International Business Machines Corp
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Filing: 1967-11-06
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Granted: 1970-05-05
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Expires: 1987-11-06
Abstract
No abstract record available.
Inventors
- 👤 Melbourne E Rabedeau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:24
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/002; G11B7/0033; G11B11/00; G11B11/10; G11B11/105; G11B11/1055; G11B11/10576; G11B11/10582; G11B11/10584; G11B7/08; G11B7/09; G11B7/0938; G11B7/24
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) | 1973-05-04 | 1973-11-03 | 1974-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-04 | 1977-11-03 | 1978-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-04 | 1981-11-03 | 1982-05-05 | $7700.00 | Window Closed / Lapsed |