Patent US3588873A successfully refreshed from Google Patents.
US3588873A
Expired / Lapsed
US
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Information display apparatus
Assignee: HP Inc
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Filing: 1968-11-12
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Granted: 1971-06-28
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Expires: 1988-11-12
Abstract
Abstract A CATHODE-RAY DISPLAY TUBE AND ASSOCIATED SWEEP CIRCUITRY DISPLAYS ALPHANUMERIC CHARACTERS WHICH ARE CENTERED BETWEEN ADJACENT CHARACTERS AND WHICH ARE SEPARATED INTO GROUPS OF THREE CHARACTERS TO FACILITATE THE PROMPT RECOGNITION OF PUNCTUATION IN A LONG SERIES OF CHARACTERS.
Inventors
- 👤 Thomas E Osborne
- 👤 Kay B Magleby
- 👤 Joseph A Lukes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:06
CPC Classifications
G; G09; G09G; G09G1/00; G09G1/06; G09G1/14; G09G1/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |