US 4671120ACTIVE SECRECY ORDER
COMBINED HEADING AND DEPTH SENSOR
Assignee
LAITRAM CORPORATION THE
Filed
Apr 25, 1983
Granted
Jun 9, 1987
Location
MARBLEHEAD MA US
Abstract
A combined heading and depth sensor for acquisition of both compass heading and depth data and transmission of the combined data over a two wire communication link as a single packet of information to a remote data acquisition unit. The sensor includes a remote reading compass assembly, a depth sensor and circuitry to interface the compass and depth sensors to the communication link. A communication protocol is defined permitting addressable interrogation of a plurality of combined heading and depth sensors over the two wire link.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Sep 29, 1983
Rescinded
Never rescinded
Duration
42y 9mo — still active
This secrecy order has no recorded rescission date in USPTO records. The order may still be legally in force, or rescission data may not be publicly available.
Inventor
- 1JOHN T. FOWLER
Record Details
- Patent number
- US 4671120
- Application
- 06488139
- Aerospace match
- No
- Dataset source
- 35 USC §181 SO records
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LAITRAM CORPORATION THEBack to patent indexSource: USPTO 35 USC §181 secrecy order records