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Frederick Electronics Corp.
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Frederick, MD, US
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Patents Grants
last 30 patents
Information
Patent Grant
High-speed time share processor
Patent number
4,425,616
Issue date
Jan 10, 1984
Frederick Electronic Corporation
Jack L. Woodell
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Digital phase-locked loop circuit
Patent number
4,418,318
Issue date
Nov 29, 1983
Frederick Electronics Corporation
Arnold Swagerty
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Teletypewriter line keyer with switching current regulator
Patent number
4,355,403
Issue date
Oct 19, 1982
Frederick Electronics Corporation
John W. Spaniol
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
FSK Tone generator circuit
Patent number
4,317,209
Issue date
Feb 23, 1982
Frederick Electronics Corp.
Julius A. Barthelme
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Distributed processing telex exchange
Patent number
4,292,465
Issue date
Sep 29, 1981
Frederick Electronics Corporation
John F. Wilson
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Circuit for handling conversation data in a distributed processing...
Patent number
4,291,196
Issue date
Sep 22, 1981
Frederick Electronics Corp.
John W. Spaniol
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Apparatus for generating telex signaling sequences in a distributed...
Patent number
4,288,658
Issue date
Sep 8, 1981
Frederick Electronics Corporation
Larry C. Bieber
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Electronic card cage interfacing assembly
Patent number
4,272,141
Issue date
Jun 9, 1981
Frederick Electronics
Robert S. McKeen
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Pseudo-transparent stop bit generator
Patent number
4,210,777
Issue date
Jul 1, 1980
Frederick Electronics Corp.
John J. Bowerman
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Phase locked loop exciter generator for high frequency transmitter
Patent number
4,107,612
Issue date
Aug 15, 1978
Frederick Electronics Corporation
J. Howard Leveque
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Trademark
last 30 trademarks
Information
Trademark
73438226 - PC
Serial number
73438226
Filing date
Aug 8, 1983
Frederick Electronics Corporation
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information
Trademark
73414803 - PC+
Serial number
73414803
Filing date
Feb 24, 1983
Frederick Electronics Corporation
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information
Trademark
73414802 - COLORPLUS
Serial number
73414802
Registration number
1283161
Filing date
Feb 24, 1983
Frederick Electronics Corporation
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information
Trademark
73316672 - D3
Serial number
73316672
Registration number
1218197
Filing date
Jun 29, 1981
Frederick Electronics Corporation
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information
Trademark
73316671 - D3 SYSTEM
Serial number
73316671
Registration number
1218196
Filing date
Jun 29, 1981
Frederick Electronics Corporation
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information
Trademark
72412061 - ELTEX
Serial number
72412061
Registration number
976698
Filing date
Jan 7, 1972
FREDERICK ELECTRONICS CORPORATION
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments