Inventor
Steven A. Stringfellow
Inventor
Oakland, MI, US
Overview
Patents· 10 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Bprimary
G02BOptical elements, systems or apparatus44%
B60KArrangement or mounting of propulsion units or of transmissions in vehicles22%
B60RVehicles, vehicle fittings, or vehicle parts, not otherwise provided for6%
G01CMeasuring distances, levels or bearings6%
G01DMeasuring not specially adapted for a specific variable6%
G03BApparatus or arrangements for taking photographs or for projecting or viewing them6%
G03HHolographic processes or apparatus6%
H04NPictorial communication, e.g. television6%
PatentTitleYear
8,271,161'Method and system for securely storing odometer information in an automobile'20127,936,489'Holographic information display'20117,271,960'Universal vehicle head up display (HUD) device and method for using the same'20076,359,737'Combined head-up display'20025,997,161'Black light instrument cluster assembly'19995,486,840'Head up display with incident light filter'19965,361,165'Reflective cluster display with stowable viewing screen'19945,198,936'Reflective cluster display'19935,028,119'Aircraft head-up display'19914,973,139'Automotive head-up display'1990Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1990–1991Patents assigned to HUGHES AIRCRAFT CO (2)· patent assignee history
1990–1991Based in Hermosa Beach, CA, US· patent location history
1993–1999Patents assigned to GEN MOTORS CORP (3)· patent assignee history
1993–2012Based in Oakland, MI, US· patent location history
1996Patents assigned to DELCO ELECTRONICS CORP (1)· patent assignee history
1999–2007Based in Oakland Township, MI, US· patent location history
2007–2012Patents assigned to STRINGFELLOW STEVEN A (2)· patent assignee history
2011–2012Patents assigned to GM GLOBAL TECH OPERATIONS INC (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| GEN MOTORS CORP | 3 | 1993–1999 |
| GM GLOBAL TECH OPERATIONS INC | 2 | 2011–2012 |
| HUGHES AIRCRAFT CO | 2 | 1990–1991 |
| STRINGFELLOW STEVEN Aself | 2 | 2007–2012 |
| DELCO ELECTRONICS CORP | 1 | 1996 |
Locations
| Location | Patents | Span |
|---|---|---|
| Oakland, MI, US | 5 | 1993–2012 |
| Oakland Township, MI, US | 3 | 1999–2007 |
| Hermosa Beach, California, US | 2 | 1990–1991 |