US 4964091
ELECTROACOUSTIC TRANSDUCER
Assignee
Filed
Oct 5, 1970
Granted
Oct 16, 1990
Location
PANAMA CITY FL US
Abstract
This invention pertains to the electroacoustic transducer arts and disclo an improved physical construction therefor in which a honeycomb-like member is used to secure both pressure release and thermal transfer for the converting element.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Jul 22, 1982
Rescinded
Feb 21, 1990
Duration
7 years, 7 months
Inventor
- 1RUFUS L. COOK
Record Details
- Patent number
- US 4964091
- Application
- 05078284
- Aerospace match
- No
- Dataset source
- 35 USC §181 SO records
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Back to patent indexSource: USPTO 35 USC §181 secrecy order records