Patent US2532173A successfully refreshed from Google Patents.
US2532173A
Expired / Lapsed
US
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Microphone stand
Assignee: Bosch Security Systems Inc
•
Filing: 1945-05-04
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Granted: 1950-11-28
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Expires: 1965-05-04
Abstract
No abstract record available.
Inventors
- 👤 Fred S Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:57
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1449658A
Cited
US1511630A
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US1970624A
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US2090550A
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US2271194A
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US2303978A
Cited
US2299683A
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US2366950A
Cited
US2379379A
Cited
US2397749A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-27 | 1954-05-29 | 1954-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-27 | 1958-05-29 | 1958-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-27 | 1962-05-29 | 1962-11-28 | $7700.00 | Window Closed / Lapsed |