Patent US2431104A successfully refreshed from Google Patents.
US3267455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse scanned reflective display
Assignee: General Precision Inc
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Filing: 1963-09-25
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Granted: 1966-08-16
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Expires: 1983-09-25
Abstract
No abstract record available.
Inventors
- 👤 John P Mcguire
- 👤 John K Mckendry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:07
CPC Classifications
G; G09; G09F; G09F9/00; G09F9/30; G09F9/37; G09F9/375
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
216 words
A REFLECTIVE DISPLAY MEMBER COMPRISING, A DISPLACEABLE ELEMENT HAVING OPPOSITELY DISPOSED PORTIONS WITH DIFFERENT REFLECTIVE CHARACTERISTICS AND INCLUDING A MAGNETIZED ELEMENT HAVING POLES OF OPPOSITE MAGNETIC POLARITY EACH RESPECTIVELY POSITIONED CENTRALLY OF A RESPECTIVE DIFFERENT REFLECTIVE PORTION, A FIXED MAGNETIC MEMBER POSITIONED CONTIGUOUS TO SAID DISPLACEABLE ELEMENT, SAID FIXED MAGNETIC MEMBER COACTING WITH ONE OF THE POLES OF SAID MAGNETIZED ELEMENT FOR MAINTAINING SAID DISPLACEABLE ELEMENT IN A FIRST STABLE STATE WHEREIN ONE REFLECTIVE CHARACTERISTIC IS VISIBLE AND COACTING WITH THE OTHER POLE OF SAID MAGNETIZED ELEMENT FOR MAINTAINING SAID DISPLACEABLE ELEMENT IN A SECOND STABLE STATE WHEREIN ONLY THE OTHER REFLECTIVE CHARACTERISTIC IS VISIBLE, FIRST SELECTIVELY OPERABLE MEANS FOR ESTABLISHING A FIRST UNIDIRECTIONAL MAGNETIC FIELD TO INTERACT WITH THE MAGNETIC FIELD OF SAID MAGNETIZED ELEMENT TO CAUSE SAID DISPLACEABLE ELEMENT TO BE DISPLACED TO A TRANSIENT POSITION INTERMEDIATE TO SAID FIRST AND SECOND STATES WHEREIN NEITHER OF THE POLES OF SAID MAGNETIZED ELEMENT IS CLOSELY ADJACENT TO SAID FIXED MAGNETIC MEMBER, AND SECOND SELECTIVELY OPERABLE MEANS FOR ESTABLISHING A SECOND UNIDIRECTIONAL MAGNETIC FIELD TO INTERACT WITH THE FIELD OF SAID MAGNETIZED ELEMENT TO DISPLACE SAID DISPLACEABLE ELEMENT TO ONE OR THE OTHER OF ITS TABLE STATES WHEREIN ONE OR THE OTHER OF THE POLES OF SAID MAGNETIZED ELEMENT IS CLOSELY ADJACENT SAID FIXED MAGNETIC MEMBER.
Claim 2
Dependent Claim
216 words
A REFLECTIVE DISPLAY MEMBER COMPRISING, A DISPLACEABLE ELEMENT HAVING OPPOSITELY DISPOSED PORTIONS WITH DIFFERENT REFLECTIVE CHARACTERISTICS AND INCLUDING A MAGNETIZED ELEMENT HAVING POLES OF OPPOSITE MAGNETIC POLARITY EACH RESPECTIVELY POSITIONED CENTRALLY OF A RESPECTIVE DIFFERENT REFLECTIVE PORTION, A FIXED MAGNETIC MEMBER POSITIONED CONTIGUOUS TO SAID DISPLACEABLE ELEMENT, SAID FIXED MAGNETIC MEMBER COACTING WITH ONE OF THE POLES OF SAID MAGNETIZED ELEMENT FOR MAINTAINING SAID DISPLACEABLE ELEMENT IN A FIRST STABLE STATE WHEREIN ONE REFLECTIVE CHARACTERISTIC IS VISIBLE AND COACTING WITH THE OTHER POLE OF SAID MAGNETIZED ELEMENT FOR MAINTAINING SAID DISPLACEABLE ELEMENT IN A SECOND STABLE STATE WHEREIN ONLY THE OTHER REFLECTIVE CHARACTERISTIC IS VISIBLE, FIRST SELECTIVELY OPERABLE MEANS FOR ESTABLISHING A FIRST UNIDIRECTIONAL MAGNETIC FIELD TO INTERACT WITH THE MAGNETIC FIELD OF SAID MAGNETIZED ELEMENT TO CAUSE SAID DISPLACEABLE ELEMENT TO BE DISPLACED TO A TRANSIENT POSITION INTERMEDIATE TO SAID FIRST AND SECOND STATES WHEREIN NEITHER OF THE POLES OF SAID MAGNETIZED ELEMENT IS CLOSELY ADJACENT TO SAID FIXED MAGNETIC MEMBER, AND SECOND SELECTIVELY OPERABLE MEANS FOR ESTABLISHING A SECOND UNIDIRECTIONAL MAGNETIC FIELD TO INTERACT WITH THE FIELD OF SAID MAGNETIZED ELEMENT TO DISPLACE SAID DISPLACEABLE ELEMENT TO ONE OR THE OTHER OF ITS TABLE STATES WHEREIN ONE OR THE OTHER OF THE POLES OF SAID MAGNETIZED ELEMENT IS CLOSELY ADJACENT SAID FIXED MAGNETIC MEMBER.
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) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |