Patent US3058381A successfully refreshed from Google Patents.
US3058381A
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Transistor tone generating system using transistorized keying means
Assignee: Wurlitzer Co
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Filing: 1959-05-11
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Granted: 1962-10-16
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Expires: 1979-05-11
Abstract
No abstract record available.
Inventors
- 👤 Harold O Schwartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:40
CPC Classifications
G; G10; G10H; G10H5/00; G10H5/02; G10H5/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2909675A
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US2935626A
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US2970227A
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US2848653A
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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) | 1965-10-15 | 1966-04-16 | 1966-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-15 | 1970-04-16 | 1970-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-15 | 1974-04-16 | 1974-10-16 | $7700.00 | Window Closed / Lapsed |