Inventor

Elwood E. Barnes

Inventor

Cochranville, PA, US

Overview

12→

Patents

1981–2004

Patent span

Physics

Primary field (CPC G)

Patents· 12 as inventor

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

G07Dprimary

G07DHandling of coins or valuable papers, e.g. testing, sorting by denominations, counting, dispensing, changing or depositing32%

G07FCoin-freed or like apparatus21%

G02CSpectacles11%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein11%

B65HHandling thin or filamentary material, e.g. sheets, webs, cables5%

G01BMeasuring length, thickness or similar linear dimensions5%

G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure5%

G06KGraphical data reading5%

H02PControl or regulation of electric motors, electric generators or dynamo-electric converters5%

PatentTitleYear

6,823,728'Systems and methods for measurement of tire pressure'2004 5,841,507'Light intensity reduction apparatus and method'1998 5,678,678'Apparatus for measuring the profile of documents'1997 5,671,035'Light intensity reduction apparatus and method'1997 5,358,088'Horizontal magnetoresistive head apparatus and method for detecting magnetic data'1994 5,318,164'Vending machine apparatus and method to prevent fraud and minimize damage from injected fluids'1994 5,316,124'Method and apparatus for a low-power, battery-powered vending and dispensing apparatus'1994 4,775,824'Motor control for banknote handing apparatus'1988 4,628,194'Method and apparatus for currency validation'1986 4,460,003'Coin presence sensing apparatus'1984 4,398,626'Low frequency phase shift coin examination method and apparatus'1983 4,272,757'Vending machine accountability system'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981–1997Patents assigned to MARS INC (9)· patent assignee history

1981–1988Based in Parkesburg, PA, US· patent location history

1994–2004Based in Cochranville, PA, US· patent location history

1994Based in Cochraneville, PA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
MARS INC	9	1981–1997

Locations

Location	Patents	Span
Cochranville, Pennsylvania, US	6	1994–2004
Parkesburg, Pennsylvania, US	5	1981–1988
Cochraneville, Pennsylvania, US	1	1994