US3426248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Planar visual readout display devices
Assignee: International Business Machines Corp
•
Filing: 1966-03-17
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Granted: 1969-02-04
•
Expires: 1986-03-17
Abstract
No abstract record available.
Inventors
- 👤 Anthony B Cistola
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:39
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/04; G09F; G09F9/00; G09F9/30; H; H01; H01J; H01J17/00; H01J17/38; H01J17/48; H01J17/49; H01J17/491
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3302052A
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US3320459A
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US3346759A
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US3323241A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-04 | 1972-08-05 | 1973-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-04 | 1976-08-05 | 1977-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-04 | 1980-08-05 | 1981-02-04 | $7700.00 | Window Closed / Lapsed |