Patent US3125748A successfully refreshed from Google Patents.
US3125748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
macroberts
Assignee: —
•
Filing: —
•
Granted: 1964-03-17
•
Expires: 1981-03-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:51
CPC Classifications
B; B41; B41J; B41J3/00; B41J3/44; B41J3/50; B41J2/00; B41J2/385; B41J2/43; G; G06; G06K; G06K15/00; G06K15/02; G06K15/14
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
78 words
A CHARACTER WRITING AND READING SYSTEM COMPRISING, A CARRIER MEMBER, MEANS FOR DEPOSITING VISIBLE MAGNETIC MATERIAL AT SPACED POINTS TO PROVIDE DISCRETE CHARACTERS ON THE CARRIER MEMBER, MEANS FOR MAGNETIZING THE DEPOSITED MAGNETIC MATERIAL TO SELECTED DIFFERENT MAGNETIC FLUX DENSITIES FOR DIFFERENT CHARACTERS ON THE CARRIER MEMBER, AND CHARACTER IDENTIFYING MEANS FOR SCANNING THE CARRIER MEMBER AND GENERATING ELECTRICAL SIGNALS OF MAGNITUDES PROPORTIONAL TO EACH MAGNETIC FLUX DENSITY SENSED FOR IDENTIFYING THE CHARACTER BY THE RESPECTIVE SIGNAL MAGNITUDE.
References Cited (Backward Citations)
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US2784392A
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US2791310A
Cited
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US2943907A
Cited
US2961649A
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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) | 1967-03-17 | 1967-09-16 | 1968-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-17 | 1971-09-16 | 1972-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-17 | 1975-09-16 | 1976-03-17 | $7700.00 | Window Closed / Lapsed |