US3667762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Miniaturized tape recorder
Assignee: United States Department of the Navy
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Filing: 1970-04-06
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Granted: 1972-06-06
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Expires: 1990-04-06
Abstract
Abstract A SMALL, RUGGED TAPE RECORDER ESPECIALLY ADAPTED FOR USE IN BIOMEDICAL RESEARCH AND FOR AIRCRAFT, MISSILE AND UNDERSEA INSTRUMENTATION SYSTEMS WHERE SPACE LIMITATIONS PRECLUDE THE USE OF STANDARD-SIZE EQUIPMENT. A FEATURE OF THE DESIGN IS THAT TAPE-TO-HEAD CONTACT IS INDEPENDENT OF TAPE TENSION. SHORT-TERM SPEED VARIATIONS (WOW AND FLUTTER) DO NOT EXCEED 1.2% PEAK-TO-PEAK IN THE FREQENCY RANGE OF ZERO TO 70 HERTZ.
Inventors
- 👤 James E Scheid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:10
CPC Classifications
G; G11; G11B; G11B5/00; G11B2005/0002
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) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |