US3465317A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic recording on pieces of mail and the like
Assignee: Control Data Corp
•
Filing: 1959-05-04
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Granted: 1969-09-02
•
Expires: 1979-05-04
Abstract
No abstract record available.
Inventors
- 👤 Jacob Rabinow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:17
CPC Classifications
G; G06; G06K; G06K1/00; G06K1/12; B; B07; B07C; B07C3/00; B07C3/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A PROCESS OF RECORDING MAGNETIC INFORMATION ON THE SURFACE OF AN ENVELOPE BEARING OPTICAL MARKINGS ON SAID SURFACE, CONSISTING OF ADHERENTLY DEPOSITING ON AN AREA OF SAID SURFACE INCLUDING SAID MARKINGS AND SURFACE AREA ADJACENT TO SAID MARKINGS, A THIN, UNIFORM, UNINTERRUPTED LAYER OF MAGNETIC PARTICLES THROUGH WHICH SAID MARKINGS ARE VISIBLE; PRESSING THE SURFACE SO FORMED AGAINST A MAGNETIC WRITING HEAD BY AIR SUCTION; MOVING THE SURFACE RELATIVE TO A MAGNETIC RECORDING HEAD IN THE PLANE OF SAID SURFACE, AND SELECTIVELY ENERGIZING SAID HEAD TO MAGNETICALLY WRITE BITS OF CODED INFORMATION ON SAID LAYER DURING SAID RELATIVE MOTION.
Claim 2
Dependent Claim
99 words
A PROCESS OF RECORDING MAGNETIC INFORMATION ON THE SURFACE OF AN ENVELOPE BEARING OPTICAL MARKINGS ON SAID SURFACE, CONSISTING OF ADHERENTLY DEPOSITING ON AN AREA OF SAID SURFACE INCLUDING SAID MARKINGS AND SURFACE AREA ADJACENT TO SAID MARKINGS, A THIN, UNIFORM, UNINTERRUPTED LAYER OF MAGNETIC PARTICLES THROUGH WHICH SAID MARKINGS ARE VISIBLE; PRESSING THE SURFACE SO FORMED AGAINST A MAGNETIC WRITING HEAD BY AIR SUCTION; MOVING THE SURFACE RELATIVE TO A MAGNETIC RECORDING HEAD IN THE PLANE OF SAID SURFACE, AND SELECTIVELY ENERGIZING SAID HEAD TO MAGNETICALLY WRITE BITS OF CODED INFORMATION ON SAID LAYER DURING SAID RELATIVE MOTION.
References Cited (Backward Citations)
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Cited
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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) | 1972-09-01 | 1973-03-03 | 1973-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-01 | 1977-03-03 | 1977-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-01 | 1981-03-03 | 1981-09-02 | $7700.00 | Window Closed / Lapsed |