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US2816181A
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Assignee: Chicago Musical Instrument Co
•
Filing: 1955-12-07
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Granted: 1957-12-10
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Expires: 1975-12-07
Abstract
No abstract record available.
Inventors
- 👤 Howard H Mann
- 👤 Norman B Erickson
- 👤 Joseph A Mathews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:58
CPC Classifications
H; H01; H01H; H01H1/00; H01H1/12; H01H1/14; H01H1/24; H01H1/242; H01H15/00; H01H15/02; H01H15/06; H01H15/16; H01H15/18; H01H19/00; H01H19/54; H01H19/60; H01H19/635; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18856; Y10T74/18864; Y10T74/18888; Y10T74/18896
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1372437A
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US1647792A
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US1880676A
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US2078253A
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US2306355A
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US2335110A
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GB627923A
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US2548280A
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US2591869A
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US2630503A
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US2573895A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-09 | 1961-06-10 | 1961-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-09 | 1965-06-10 | 1965-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-09 | 1969-06-10 | 1969-12-10 | $7700.00 | Window Closed / Lapsed |