Inventor
David A. Warner
Inventor
Cambridge, MA, US
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Bprimary
G02BOptical elements, systems or apparatus23%
F41HArmour8%
G01DMeasuring not specially adapted for a specific variable8%
G02CSpectacles8%
G07DHandling of coins or valuable papers, e.g. testing, sorting by denominations, counting, dispensing, changing or depositing8%
G09BEducational or demonstration appliances8%
G09GArrangements or circuits for control of indicating devices using static means to present variable information8%
G10DStringed musical instruments8%
G10HElectrophonic musical instruments8%
H02JElectric power networks8%
PatentTitleYear
10,891,925Stringed instrument enhanced with sympathetic strings20218,515,588'Generator reserve capacity control system and network'20137,056,119'Periscopic optical training system for operators of vehicles'20066,499,277'Coin wrapper'20024,266,849'Optical objectives'19814,247,769'Apparatus for measuring angular and linear displacements'19814,227,209'Sensory aid for visually handicapped people'19804,097,141'Optical objectives using apertured retrodirective reflectors'1978Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1978–1981Patents assigned to WARNER DAVID A (2)· patent assignee history
1978–1981Based in Cambridge, MA, US· patent location history
1980–1981Patents assigned to DRAPER LAB CHARLES S (2)· patent assignee history
2002Patents assigned to CUMMINS ALLISON CORP (1)· patent assignee history
2002Based in Williamsburg, VA, US· patent location history
2006Patents assigned to LSA INC (1)· patent assignee history
2006Based in Devon, PA, US· patent location history
2013Patents assigned to GEN ELECTRIC (1)· patent assignee history
2013Based in Fort Collins, CO, US· patent location history
2021Based in Cedar City, UT, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| DRAPER LAB CHARLES S | 2 | 1980–1981 |
| WARNER DAVID Aself | 2 | 1978–1981 |
| CUMMINS ALLISON CORP | 1 | 2002 |
| GEN ELECTRIC | 1 | 2013 |
| LSA INC | 1 | 2006 |
Locations
| Location | Patents | Span |
|---|---|---|
| Cambridge, Massachusetts, US | 4 | 1978–1981 |
| Cedar City, UT, US | 1 | 2021 |
| Fort Collins, CO, US | 1 | 2013 |
| Devon, Pennsylvania, US | 1 | 2006 |
| Williamsburg, Virginia, US | 1 | 2002 |