US3534144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Keyer-synthesizer for an electronic musical instrument employing an integrated circuit
Assignee: Marmon Co
•
Filing: 1969-01-02
•
Granted: 1970-10-13
•
Expires: 1989-01-02
Abstract
No abstract record available.
Inventors
- 👤 William C Ring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:28
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/02; G10H1/06; G10H1/08; G10H5/00; G10H5/02; G10H5/06; G10H5/07
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2498337A
Cited
US3291886A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-12 | 1974-04-13 | 1974-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-12 | 1978-04-13 | 1978-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-12 | 1982-04-13 | 1982-10-13 | $7700.00 | Window Closed / Lapsed |