US3615155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording tape cartridge
Assignee: Individual
•
Filing: 1969-03-26
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Granted: 1971-10-26
•
Expires: 1989-03-26
Abstract
Abstract A MAGNETIC TYPE CARTRIDGE INCLUDES A CASING WHICH HOUSES AN ENDLESS TAPE HAVING A STORAGE SECTION WOUND ON A SPOOL OR A DOUBLE ENDED TAPE EXTENDING BETWEEN A PAIR OF SPOOLS, THE TAPE HAVING ONE OR MORE TRANSPARENT CONTROL SECTIONS AND ADVANCING ABOUT A TUBULAR GUIDE POST. THE POST HAS A SIDE OPENING ALIGNED WITH A CASING END OPENING, AN OPEN END REGISTERING WITH AN OPENING IN THE CASING TOP WALL, AND A REFLECTOR OR PRISM SURFACE INCLINED TO DIRECT LIGHT FROM ONE OPENING TO THE OTHER. A LAMP REGISTERS WITH EACH END OPENING AND A PHOTOCONDUCTOR REGISTERS WITH EACH TOP WALL OPENING. NETWORKS ARE PROVIDED WHICH ARE RESPONSIVE TO THE PHOTOCONDUCTOR TO CONTROL THE TAPE DRIVE.
Inventors
- 👤 Emery Gelbman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:16
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/02; G11B15/05; G11B15/06; G11B15/08; G11B23/00; G11B23/02; G11B23/04; G11B23/041; G11B23/042
Claims Analysis
Total Claims: 0
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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) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |