Patent US2618191A successfully refreshed from Google Patents.
US2618191A
Expired / Lapsed
US
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Microphone pickup enclosure
Assignee: Individual
•
Filing: 1949-02-03
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Granted: 1952-11-18
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Expires: 1969-02-03
Abstract
No abstract record available.
Inventors
- 👤 Daniel W Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:47
CPC Classifications
G; G10; G10D; G10D9/00; G10D9/06; G10H; G10H3/00; G10H3/12; G10H3/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US336329A
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US370847A
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US901108A
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US1025690A
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US1064492A
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US1596984A
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US1508310A
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US1678842A
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US1565942A
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US2403231A
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US2431962A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-18 | 1956-05-19 | 1956-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-18 | 1960-05-19 | 1960-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-18 | 1964-05-19 | 1964-11-18 | $7700.00 | Window Closed / Lapsed |