US2559539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reconditioning of phonographic records
Assignee: Thomas A Edison Inc
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Filing: 1948-10-30
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Granted: 1951-07-03
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Expires: 1968-10-30
Abstract
No abstract record available.
Inventors
- 👤 Frederick G Kelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:29
CPC Classifications
G; G11; G11B; G11B3/00; G11B3/66
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
THE METHOD OF OBLITERATING EMBOSSED RECORDATIONS FROM THERMOPLASTIC MATERIAL, SAID MATERIAL HAVING THE CHARACTERISTIC OF BEING LEFT UNDER STRESS WHEN IT IS DEFORMED BY COLD FLOW, COMPRISING SUPPORTING SAID MATERIAL ON A LIQUID FILM BACKED BY A FLAT SURFACE SO THAT THE RECORDED SURFARCE THEREOF TO BE EFFACED IS IN CONTACT ONLY WITH A FLUID MEDIUM, HEATING THE MATERIAL TO A TEMPERATURE LESS THAN ITS MOLDING TEMPERATURE WHEREAT THE MATERIAL YIELDS TO SAID STRESS AND RETURNS TO ITS ORIGINAL SHAPE TO OBLITERATE SAID RECORDATIONS, AND THEREUPON COOLING SAID MATERIAL TO SET THE SAME.
Claim 2
Independent Claim
93 words
THE METHOD OF OBLITERATING EMBOSSED RECORDATIONS FROM THERMOPLASTIC MATERIAL, SAID MATERIAL HAVING THE CHARACTERISTIC OF BEING LEFT UNDER STRESS WHEN IT IS DEFORMED BY COLD FLOW, COMPRISING SUPPORTING SAID MATERIAL ON A LIQUID FILM BACKED BY A FLAT SURFACE SO THAT THE RECORDED SURFARCE THEREOF TO BE EFFACED IS IN CONTACT ONLY WITH A FLUID MEDIUM, HEATING THE MATERIAL TO A TEMPERATURE LESS THAN ITS MOLDING TEMPERATURE WHEREAT THE MATERIAL YIELDS TO SAID STRESS AND RETURNS TO ITS ORIGINAL SHAPE TO OBLITERATE SAID RECORDATIONS, AND THEREUPON COOLING SAID MATERIAL TO SET THE SAME.
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) | 1954-07-02 | 1955-01-01 | 1955-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-02 | 1959-01-01 | 1959-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-02 | 1963-01-01 | 1963-07-03 | $7700.00 | Window Closed / Lapsed |