US3331144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Teaching apparatus
Assignee: HIGH STOY TECHNOLOGICAL Corp A CORP OF
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Filing: 1965-09-10
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Granted: 1967-07-18
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Expires: 1985-09-10
Abstract
No abstract record available.
Inventors
- 👤 Hahn Steven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:00
CPC Classifications
G; G09; G09B; G09B5/00; G09B5/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
IN A TEACHING APPARATUS, THE COMBINATION OF A ROTARY TURNTABLE FOR SUPPORTING A SPIRALLY GROOVED PHONOGRAPH DISK HAVING INSTRUCTIONAL MATERIAL PRERECORDED THEREON, PICK-UP MEANS HAVING A STYLUS ENGAGEABLE WITH A GROOVED PHONOGRAPH DISK ON SAID TURNTABLE TO TRACK THE GROOVE OF THE PHONOGRAPH DISK UPON ROTATION OF THE LATTER WITH THE TURNTABLE AND OPERATIVE TO PRODUCE ELECTRICAL SIGNALS CORRESPONDING TO THE MATERIAL PRERECORDED ON THE PHONOGRAPY DISK, A MAGNETIC MEMORY DISK COUPLED WITH SAID TURNTABLE TO ROTATE COAXIALLY THEREWITH, A MAGNETIC RECORDING AND PLAYBACK HEAD OPERABLE SELECTIVELY TO RECORD MAGNETICALLY ON SAID MEMORY DISK AND TO PRODUCE ELECTRICAL SIGNALS CORRESPONDING TO A MAGNETIC RECORD ON THE MEMORY DISK, AND MECHANICAL MEANS CONNECTING SAID MAGNETIC RECORDING AND PLAYBACK HEAD WITH SAID PICK-UP MEANS SO AS TO CAUSE SAID HEAD TO TRACK A SPIRAL RECORDING PATH ON SAID MEMORY DISK WHICH CORRESPONDS TO THE SPIRAL GROOVE OF A PHONOGRAPH DISK ON SAID TURNTABLE.
Claim 2
Dependent Claim
151 words
IN A TEACHING APPARATUS, THE COMBINATION OF A ROTARY TURNTABLE FOR SUPPORTING A SPIRALLY GROOVED PHONOGRAPH DISK HAVING INSTRUCTIONAL MATERIAL PRERECORDED THEREON, PICK-UP MEANS HAVING A STYLUS ENGAGEABLE WITH A GROOVED PHONOGRAPH DISK ON SAID TURNTABLE TO TRACK THE GROOVE OF THE PHONOGRAPH DISK UPON ROTATION OF THE LATTER WITH THE TURNTABLE AND OPERATIVE TO PRODUCE ELECTRICAL SIGNALS CORRESPONDING TO THE MATERIAL PRERECORDED ON THE PHONOGRAPY DISK, A MAGNETIC MEMORY DISK COUPLED WITH SAID TURNTABLE TO ROTATE COAXIALLY THEREWITH, A MAGNETIC RECORDING AND PLAYBACK HEAD OPERABLE SELECTIVELY TO RECORD MAGNETICALLY ON SAID MEMORY DISK AND TO PRODUCE ELECTRICAL SIGNALS CORRESPONDING TO A MAGNETIC RECORD ON THE MEMORY DISK, AND MECHANICAL MEANS CONNECTING SAID MAGNETIC RECORDING AND PLAYBACK HEAD WITH SAID PICK-UP MEANS SO AS TO CAUSE SAID HEAD TO TRACK A SPIRAL RECORDING PATH ON SAID MEMORY DISK WHICH CORRESPONDS TO THE SPIRAL GROOVE OF A PHONOGRAPH DISK ON SAID TURNTABLE.
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) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |