Patent US3252153A successfully refreshed from Google Patents.
US3252153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cross-feed shield
Assignee: Consolidated Electrodynamics Corp
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Filing: 1962-10-01
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Granted: 1966-05-17
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Expires: 1982-10-01
Abstract
No abstract record available.
Inventors
- 👤 Bob J Mos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:24
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/10; G11B5/11; G11B5/127; G11B5/265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A CROSS-FEED SHIELD FOR USE WITH A MAGNETIC RECORDING DEVICE HAVING A REDUNDANT HEAD PROVIDED WITH CLOSELY SPACED WRITING AND READING HAPS AND ADAPTED TO RECORD UPON A MAGNETIC RECORDING MEDIUM HAVING A PATH OF MOVEMENT IN RELATION TO THE REDUNDANT HEAD, COMPRISING: (A) A PLATE MADE OF A HIGH MAGNETIC PERMEABILITY MATERIAL, (B) THE PLATE BEING DISPOSED ON THE SIDE OF THE MAGNETIC RECORDING MEDIUM OPPOSITE THE REDUNDANT HEAD, (C) THE PLATE HAVING A LONGITUDINAL BASE ADAPTED TO BE POSITIONED ADJACENT TO AND PARALLEL TO THE SURFACE OF THE MAGNETIC RECORDING MEDIUM, AND TO BE DISPOSED
Claim 2
Dependent Claim
97 words
A CROSS-FEED SHIELD FOR USE WITH A MAGNETIC RECORDING DEVICE HAVING A REDUNDANT HEAD PROVIDED WITH CLOSELY SPACED WRITING AND READING HAPS AND ADAPTED TO RECORD UPON A MAGNETIC RECORDING MEDIUM HAVING A PATH OF MOVEMENT IN RELATION TO THE REDUNDANT HEAD, COMPRISING: (A) A PLATE MADE OF A HIGH MAGNETIC PERMEABILITY MATERIAL, (B) THE PLATE BEING DISPOSED ON THE SIDE OF THE MAGNETIC RECORDING MEDIUM OPPOSITE THE REDUNDANT HEAD, (C) THE PLATE HAVING A LONGITUDINAL BASE ADAPTED TO BE POSITIONED ADJACENT TO AND PARALLEL TO THE SURFACE OF THE MAGNETIC RECORDING MEDIUM, AND TO BE DISPOSED
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) | 1969-05-16 | 1969-11-15 | 1970-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-16 | 1973-11-15 | 1974-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-16 | 1977-11-15 | 1978-05-17 | $7700.00 | Window Closed / Lapsed |