US2774272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoelectric musical instrument
Assignee: Individual
•
Filing: 1951-11-23
•
Granted: 1956-12-18
•
Expires: 1971-11-23
Abstract
No abstract record available.
Inventors
- 👤 Watson D Harbaugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:12
CPC Classifications
G; G10; G10H; G10H3/00; G10H3/03; G10H3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1937021A
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US1948996A
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US1998461A
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US2031764A
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US2169842A
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US2376493A
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US2539130A
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US2586664A
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DE822752C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |