US3562927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Visual education device
Assignee: MULTISENSORY SYSTEMS
•
Filing: 1967-10-30
•
Granted: 1971-02-16
•
Expires: 1987-10-30
Abstract
Abstract TRACKS ARE PROVIDED IN A SHEET INCLUDED IN AN AUDIO CIRCUIT. A USER EMPLOYS A STYLUS TO FOLLOW A TRACK AND THE AUDIO CIRCUIT EMITS A SOUND EACH TIME THE STYLUS STRAYS FROM THE TRACK. A PLURALITY OF EMBODIMENTS ARE DESCRIBED WHERE MOTION IS IMPARTED TO THE TRACKS.
Inventors
- 👤 William Moskowitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:35
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/16; G; G09; G09B; G09B19/00; G09B5/00; G09B5/06; G09B5/062
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |