Patent US3265153A successfully refreshed from Google Patents.
US3265153A
Expired / Lapsed
US
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Acoustical device with protective screen
Assignee: Bosch Security Systems Inc
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Filing: 1964-11-30
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Granted: 1966-08-09
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Expires: 1984-11-30
Abstract
No abstract record available.
Inventors
- 👤 Louis R Burroughs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:57
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/08; H04R1/083; H04R1/086
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
88 words
A COMBINATION MICROPHONE AND WIND SCREEN COMPRISING A MICROPHONE HAVING A CASING WITH AN OPENING THEREIN AND A DIAPHRAGM DISPOSED WITHIN THE OPENING OF THE CASING, AND A BODY OF OPEN CELLULAR FOAM PLASTIC HAVING A CAVITY THEREIN, THE THICKNESS OF THE BODY MEASURED BETWEEN THE CAVITY AND THE EXTERIOR SURFACE THEREOF BEING AT LEAST EQUAL TO TWICE THE DIAMETER OF THE AVERAGE CELL IN SAID BODY, THE MICROPHONE BEING DISPOSED WITHIN THE CAVITY OF THE BODY AND THE OPENING IN THE CASING BEING SPACED FROM THE BODY.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |