US2710404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-static sound-recording medium and method of making the same
Assignee: Dictaphone Corp
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Filing: 1952-08-11
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Granted: 1955-06-07
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Expires: 1972-08-11
Abstract
No abstract record available.
Inventors
- 👤 Richard G Rowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:23
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/402; C; C08; C08K; C08K5/00; C08K5/16; C08K5/20; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
A SOUND-RECORDING MEDIUM HAVING ANTI-STATIC PROPERTIES, SAID MEDIUM COMPRISING A SOUND-RECORDING WAX CONTAINING FROM 2% TO 10% BY WEIGHT OF N-2-HYDROXYETHYL LACTAMIDE.
Claim 2
Dependent Claim
22 words
A SOUND-RECORDING MEDIUM HAVING ANTI-STATIC PROPERTIES, SAID MEDIUM COMPRISING A SOUND-RECORDING WAX CONTAINING FROM 2% TO 10% BY WEIGHT OF N-2-HYDROXYETHYL LACTAMIDE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-06 | 1958-12-06 | 1959-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-06 | 1962-12-06 | 1963-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-06 | 1966-12-06 | 1967-06-07 | $7700.00 | Window Closed / Lapsed |