US3030231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording tape having permanent curved end
Assignee: Individual
•
Filing: 1958-02-07
•
Granted: 1962-04-17
•
Expires: 1978-02-07
Abstract
No abstract record available.
Inventors
- 👤 Bar Solo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:21
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/60; G11B15/66; G11B15/67; G11B15/674
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
AN IMPROVED RECORDING TAPE, IN PARTICULAR A MAGNETIC TAPE, TO BE WOUND ON A SPOOL, HAVING THE EXTREMITIES THEREOF AND FORMED INTO A FLEXIBLE OPENENDED LOOP, WITH A RADIUS OF CURVATURE, APPROACHING THE
Claim 2
Dependent Claim
33 words
AN IMPROVED RECORDING TAPE, IN PARTICULAR A MAGNETIC TAPE, TO BE WOUND ON A SPOOL, HAVING THE EXTREMITIES THEREOF AND FORMED INTO A FLEXIBLE OPENENDED LOOP, WITH A RADIUS OF CURVATURE, APPROACHING THE
References Cited (Backward Citations)
US1815010A
Cited
US1755818A
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US2114187A
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US2105238A
Cited
GB630563A
Cited
US2645494A
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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) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |