US3430530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Music system
Assignee: Thomas International Corp
•
Filing: 1967-12-05
•
Granted: 1969-03-04
•
Expires: 1987-12-05
Abstract
No abstract record available.
Inventors
- 👤 Gerard R Grindinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:13
CPC Classifications
G; G10; G10G; G10G1/00; G10G1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US383011A
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US706002A
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US877911A
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US1017045A
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US1009194A
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US1100824A
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US1270657A
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US2221143A
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US2284868A
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US2406946A
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US3069959A
Cited
US3141371A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-03 | 1972-09-02 | 1973-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-03 | 1976-09-02 | 1977-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-03 | 1980-09-02 | 1981-03-04 | $7700.00 | Window Closed / Lapsed |