Patent US2495581A successfully refreshed from Google Patents.
US2495581A
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US
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Electrical transmission system for musical instruments
Assignee: HAMMOND INSTR CO
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Filing: 1944-12-23
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Granted: 1950-01-24
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Expires: 1964-12-23
Abstract
No abstract record available.
Inventors
- 👤 John M Hanert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:03
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/02; G10H1/06; H; H03; H03H; H03H7/00; H03H7/30; H03H7/32; Y; Y10; Y10S; Y10S84/00; Y10S84/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2007370A
Cited
US2009229A
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US2148478A
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US2233948A
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US2231079A
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US2217957A
Cited
US2328282A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-23 | 1953-07-25 | 1954-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-23 | 1957-07-25 | 1958-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-23 | 1961-07-25 | 1962-01-24 | $7700.00 | Window Closed / Lapsed |