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US3534359A
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US
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Optical pointer for display system
Assignee: International Business Machines Corp
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Filing: 1968-01-12
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Granted: 1970-10-13
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Expires: 1988-01-12
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:36
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/03; G06F3/033; G06F3/038; G06F3/0386; G06F3/14; G06F3/147; G09; G09G; G09G3/00; G09G3/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3189889A
Cited
US3256516A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-12 | 1974-04-13 | 1974-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-12 | 1978-04-13 | 1978-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-12 | 1982-04-13 | 1982-10-13 | $7700.00 | Window Closed / Lapsed |