US2706478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for use with musical instruments
Assignee: Individual
•
Filing: 1952-05-05
•
Granted: 1955-04-19
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Expires: 1972-05-05
Abstract
No abstract record available.
Inventors
- 👤 Porter Maurice Malcolm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:28
CPC Classifications
A; A63; A63B; A63B71/00; A63B71/08; A63B71/085; G; G10; G10D; G10D7/00; G10D7/06; G10D9/00
Claims Analysis
Total Claims: 0
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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) | 1958-04-18 | 1958-10-18 | 1959-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-18 | 1962-10-18 | 1963-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-18 | 1966-10-18 | 1967-04-19 | $7700.00 | Window Closed / Lapsed |