Patent US2385720A successfully refreshed from Google Patents.
US2937556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical musical instruments
Assignee: Hammond Organ Co
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Filing: 1955-03-31
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Granted: 1960-05-24
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Expires: 1975-03-31
Abstract
No abstract record available.
Inventors
- 👤 John M Hanert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:07
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/02; G10H1/04; G10H1/053; G10H1/057
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2043828A
Cited
US2126464A
Cited
US2294178A
Cited
US2301871A
Cited
US2319087A
Cited
US2497331A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |