Patent US3470306A successfully refreshed from Google Patents.
US3470306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bass register keying system
Assignee: Baldwin Piano and Organ Co
•
Filing: 1965-07-01
•
Granted: 1969-09-30
•
Expires: 1985-07-01
Abstract
No abstract record available.
Inventors
- 👤 George H Hadden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:35
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/18; G10H1/22; G10H1/36; G10H1/38; G10H2210/00; G10H2210/155; G10H2210/321; Y; Y10; Y10S; Y10S84/00; Y10S84/02; Y10S84/22
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2607255A
Cited
US2555040A
Cited
US2557133A
Cited
US3046415A
Cited
US3112353A
Cited
US3240857A
Cited
US3333041A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |