Robert M Johnstone
Inventor
Stats
- 12 US patents issued
- 12 US Applications filed
- most recent filing
This is official USPTO record data
Details
- 12 US Patents Issued
- 12 US Applications Filed
- 259 Total Citation Count
- Nov 12, 1997 Most Recent Filing
- Aug 4, 1983 Earliest Filing
Work History
Patent Owner | Applications Filed | Year |
---|---|---|
Prolume Incorporated | 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
Address | Duration |
---|---|
196 Lakeview Dr., Fairfield, CT 06430 | Sep 28, 93 - Sep 28, 93 |
Fairfield, CT | Dec 05, 89 - Feb 22, 00 |
Shelton, CT | Dec 31, 85 - Dec 31, 85 |
Technology Profile
Technology | Matters | |
---|---|---|
F21S: | NON-PORTABLE LIGHTING DEVICES OR SYSTEMS THEREOF | 2 |
F24S: | 1 | |
G09F: | DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS | 6 |
Patents / Publication
Patents / Publication # | Year of Publication / Issued | Title | Citations |
---|---|---|---|
6026602 | 2000 | Apparatus and method of indirectly illuminating a sign | 30 |
5768814 | 1998 | Exit sign with removable emergency power pack module | 27 |
5727867 | 1998 | Canopy mounting device for exit signs and the like | 5 |
5542201 | 1996 | Indirectly illuminated sign | 22 |
5461550 | 1995 | Canopy mounting device for exit signs and the like | 26 |
We are sorry but your current selection exceeds the maximum number of portfolios (0) for this membership level. > Upgrade to our Level for up to -1 portfolios!.