US2787786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound producers
Assignee: Robert Bosch GmbH
•
Filing: 1953-06-29
•
Granted: 1957-04-02
•
Expires: 1973-06-29
Abstract
No abstract record available.
Inventors
- 👤 Zeininger Gustav
- 👤 Issler Jorg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:49
CPC Classifications
G; G10; G10K; G10K1/00; G10K1/06; G10K1/062; G10K9/00; G10K9/18; G10K9/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE346355C
Cited
US1523964A
Cited
US1737883A
Cited
US2046772A
Cited
US1940150A
Cited
US2228677A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-01 | 1960-10-01 | 1961-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-01 | 1964-10-01 | 1965-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-01 | 1968-10-01 | 1969-04-02 | $7700.00 | Window Closed / Lapsed |