Patent US3539701A successfully refreshed from Google Patents.
US3539701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical musical instrument
Assignee: URSULA A MILDE
•
Filing: 1967-07-07
•
Granted: 1970-11-10
•
Expires: 1987-07-07
Abstract
No abstract record available.
Inventors
- 👤 Ursula A Milde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:25
CPC Classifications
G; G10; G10H; G10H5/00; G10H5/005; G10H3/00; G10H3/12; G10H3/125; G10L; G10L21/00; G10H2210/00; G10H2210/031; G10H2210/066
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1973-11-09 | 1974-05-11 | 1974-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-09 | 1978-05-11 | 1978-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-09 | 1982-05-11 | 1982-11-10 | $7700.00 | Window Closed / Lapsed |