Inventor

Thomas A. Fletcher

Inventor

Dana, NC, US

Overview

1977–2017

Patent span

Mechanical engineering

Primary field (CPC F)

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

F21Vprimary

F21VFunctional features or details of lighting devices or systems thereof21%

G01NInvestigating or analysing materials by determining their chemical or physical properties13%

G01JMeasurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet light8%

A24DCigars5%

D21GCalenders5%

D21HPulp compositions5%

F21SNon-portable lighting devices5%

H01HElectric switches5%

H03KPulse technique5%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1977–1982Patents assigned to GEN ELECTRIC (8)· patent assignee history

1977–1982Based in Dana, NC, US· patent location history

1991–1997Patents assigned to HONEYWELL INC (8)· patent assignee history

1991–1992Based in Freeport, IL, US· patent location history

1994–2001Patents assigned to PHILIP MORRIS INC (3)· patent assignee history

1994–2017Based in Chesterfield, VA, US· patent location history

1995–1997Based in Stephenson, IL, US· patent location history

2012–2017Patents assigned to PHILIP MORRIS USA INC (2)· patent assignee history

2012Patents assigned to CUNNINGHAM JOHN F (1)· patent assignee history

Assignee and location history derived from the patent record.

Assignees

Locations