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Inventor

Bob M. Duff

Inventor
San Antonio, TX, US

Overview

3→
Patents
1987–1990
Patent span
Physics
Primary field (CPC G)

Patents· 3 as inventor

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

G01Vprimary
G01VGeophysics50%
A61BDiagnosis25%
H01QAntennas, i.e. radio aerials25%
PatentTitleYear
4,905,706'Method an apparatus for detection of heart disease'19904,835,474'Method and apparatus for detecting subsurface anomalies'19894,689,569'Directional antenna system for use in a borehole incorporating antenna dipole elements'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987–1989Patents assigned to SOUTHWEST RES INST (2)· patent assignee history
1987–1990Based in San Antonio, TX, US· patent location history
1990Patents assigned to NIPPON COLIN CO LTD (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SOUTHWEST RES INST21987–1989
NIPPON COLIN CO LTD11990
Locations
LocationPatentsSpan
San Antonio, Texas, US31987–1990