Robert M Johnstone

Inventor

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Details

Work History

Patent OwnerApplications FiledYear
Prolume, Inc.
1
1
1
1993
1995
1997
HUBBELL INCORPORATED
2
1
2
2
1
1988
1989
1992
1993
1995
G.B. BUILDING SYSTEMS CORPORATION
1
1
1
1989
1993
1995
SENTINEL LIGHTING WIRING SYSTEMS, INC.
2
1988
GENERAL SIGNAL CORPORATION
1
1989
DUAL-LITE MANUFACTURING, INC.
1
1983

Inventor Addresses

AddressDuration
196 Lakeview Dr., Fairfield, CT 06430Sep 28, 93 - Sep 28, 93
Fairfield, CTDec 05, 89 - Feb 22, 00
Shelton, CTDec 31, 85 - Dec 31, 85

Technology Profile

Technology # of Patents
F21S: NON-PORTABLE LIGHTING DEVICES OR SYSTEMS THEREOF 2
F24S: 1
G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS 6

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Patents / Publication

Patents / Publication #Year of Publication / IssuedTitleCitations
6,026,6022000Apparatus and method of indirectly illuminating a sign23
5,768,8141998Exit sign with removable emergency power pack module24
5,727,8671998Canopy mounting device for exit signs and the like5
5,542,2011996Indirectly illuminated sign14
5,461,5501995Canopy mounting device for exit signs and the like25

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