US2703504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tone adjustment for vibrant bars
Assignee: MAAS ROWE ELECTROMUSIC CORP
•
Filing: 1949-09-13
•
Granted: 1955-03-08
•
Expires: 1969-09-13
Abstract
No abstract record available.
Inventors
- 👤 Paul H Rowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:48
CPC Classifications
G; G10; G10D; G10D13/00; G10D13/01; G10D13/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1999355A
Cited
US491607A
Cited
US137643A
Cited
US644817A
Cited
US793300A
Cited
US1632751A
Cited
US1838502A
Cited
US2180110A
Cited
US2273333A
Cited
US2413062A
Cited
US2581963A
Cited
US2542540A
Cited
US2454402A
Cited
US2588295A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-03-07 | 1958-09-06 | 1959-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-07 | 1962-09-06 | 1963-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-07 | 1966-09-06 | 1967-03-08 | $7700.00 | Window Closed / Lapsed |