US3096271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Data display device
Assignee: Unisys Corp
•
Filing: 1958-11-26
•
Granted: 1963-07-02
•
Expires: 1978-11-26
Abstract
No abstract record available.
Inventors
- 👤 Wilbur G Hespenheide
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:29
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/15; G02F1/1506; G02F1/153
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A SYMBOL DISPLAY DEVICE COMPRISING A TRANSPARENT WALLED VESSEL, A PLURALITY OF ELECTRODES EACH FABRICATED FROM TRANSPARENT MATERIAL, AT LEAST ONE OF SAID ELECTRODES HAVING A CONDUCTING SURFACE FORMED AS A SYMBOL THEREON, SEPARATE CONDUCTING MEANS CONNECTED TO EACH ELECTRODE, AN IMMERSING LIQUID WITHIN SAID TRANSPARENT WALLED VESSEL SURROUNDING SAID ELECTRODES AND BEING CAPABLE OF DEPOSITING A VISIBLE SOLID UPON THE SYMBOL CARRYING ELECTRODE ARRANGED AS A CATHODE, UPON THE APPLICATION OF A POTENTIAL DIFFERENTIAL OF PROPER POLARITY BETWEEN ONE OTHER OF SAID ELECTRODES SERVING AS AN ANODE AND THE SYMBOL CARRYING ELECTRODE, SAID VISIBLE SOLID BEING REMOVED UPON THE APPLICATION OF A POTENTIAL DIFFERENTIAL OF OPPOSITE POLARITY BETWEEN THE SAID SYMBOL CARRYING ELECTRODE, NOW ACTING AS AN ANODE AND ANY OTHER OF SAID PLURALITY OF ELECTRODES SERVING AS A CATHODE.
Claim 2
Dependent Claim
131 words
A SYMBOL DISPLAY DEVICE COMPRISING A TRANSPARENT WALLED VESSEL, A PLURALITY OF ELECTRODES EACH FABRICATED FROM TRANSPARENT MATERIAL, AT LEAST ONE OF SAID ELECTRODES HAVING A CONDUCTING SURFACE FORMED AS A SYMBOL THEREON, SEPARATE CONDUCTING MEANS CONNECTED TO EACH ELECTRODE, AN IMMERSING LIQUID WITHIN SAID TRANSPARENT WALLED VESSEL SURROUNDING SAID ELECTRODES AND BEING CAPABLE OF DEPOSITING A VISIBLE SOLID UPON THE SYMBOL CARRYING ELECTRODE ARRANGED AS A CATHODE, UPON THE APPLICATION OF A POTENTIAL DIFFERENTIAL OF PROPER POLARITY BETWEEN ONE OTHER OF SAID ELECTRODES SERVING AS AN ANODE AND THE SYMBOL CARRYING ELECTRODE, SAID VISIBLE SOLID BEING REMOVED UPON THE APPLICATION OF A POTENTIAL DIFFERENTIAL OF OPPOSITE POLARITY BETWEEN THE SAID SYMBOL CARRYING ELECTRODE, NOW ACTING AS AN ANODE AND ANY OTHER OF SAID PLURALITY OF ELECTRODES SERVING AS A CATHODE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-01 | 1966-12-31 | 1967-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-01 | 1970-12-31 | 1971-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-01 | 1974-12-31 | 1975-07-02 | $7700.00 | Window Closed / Lapsed |