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Inventor

Stephen P. Hirsch

Inventor
North Prairie, WI, US

Overview

4→
Patents
1983–2009
Patent span
Physics
Primary field (CPC G)

Patents· 4 as inventor

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

G03Bprimary
G03BApparatus or arrangements for taking photographs or for projecting or viewing them40%
F16CShafts20%
G01FMeasuring volume, volume flow, mass flow or liquid level20%
G01TMeasurement of nuclear or x-radiation20%
PatentTitleYear
7,629,584'System for measuring ionizing radiation'20094,470,643'Ball bearing and retainer therefor'19844,410,248'Optical and focusing arrangement for microfiche reader'19834,400,068'Microfiche reader carrier assembly'1983

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1983–1984Patents assigned to REALIST (3)· patent assignee history
1983–1984Based in North Prairie, WI, US· patent location history
2009Patents assigned to BERTHOLD TECH GMBH & CO KG (1)· patent assignee history
2009Based in Mannheim, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
REALIST31983–1984
BERTHOLD TECH GMBH & CO KG12009
Locations
LocationPatentsSpan
North Prairie, WI, US31983–1984
Mannheim, DE12009