US4066268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disc recording provided with legible matter
Assignee: Deutsche Thomson OHG
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Filing: 1975-02-10
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Granted: 1978-01-03
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Expires: 1995-02-10
Abstract
Abstract In the production of disc recordings, the label portion therefor is formed by tracing a pattern of essentially circular grooves or arrays of dots and groove or dot-free areas in the location of the label portion, the grooved areas contrasting visually with the groove-free areas and the pattern being such that one type of area, preferably the groove-free areas, forms the legible characters and patterns to appear in the label portion.
Inventors
- 👤 Heinz Borchard
- 👤 Gunter Grottker
- 👤 Peter Thun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:51
CPC Classifications
B; B41; B41J; B41J3/00; B41J3/407; B41J3/4071; G; G11; G11B; G11B23/00; G11B23/38; G11B23/40
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
69 words
A record disc provided with a groove containing stored signals and with a nominally flat surface portion separate from the region containing stored signals and constituting a label portion carrying readable information, the improvement wherein the surface of said disc is provided, in said label portion, with a series of substantially circular, discontinuous grooves, with the discontinuities of all of the grooves forming a pattern constituting the readable information.
Claim 2
Dependent Claim
69 words
A record disc provided with a groove containing stored signals and with a nominally flat surface portion separate from the region containing stored signals and constituting a label portion carrying readable information, the improvement wherein the surface of said disc is provided, in said label portion, with a series of substantially circular, discontinuous grooves, with the discontinuities of all of the grooves forming a pattern constituting the readable information.
Claim 3
Dependent Claim
13 words
A disc as defined in claim 1 constituted by a thin, flexible foil.
Claim 4
Dependent Claim
25 words
A disc as defined in claim 1 wherein said label portion is on the same side of said disc as said groove containing stored signals.
Claim 5
Dependent Claim
27 words
A disc as defined in claim 1 wherein said discontinuous grooves are substantially concentric to one another and to the turns of said groove containing stored signals.
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) | 1981-01-02 | 1981-07-04 | 1982-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-02 | 1985-07-04 | 1986-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-02 | 1989-07-04 | 1990-01-03 | $7700.00 | Window Closed / Lapsed |