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Inventors

Egmont Rohwer Ralf Zimmermann Hans Jorg Heger Ralf Dorfner Ulrich Boesl Antonius Kettrup

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GSF-FORSCHUNGSZENTRUM FUR UMWELT UND GESUNDHEIT GMBH

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GAS INLET FOR AN ION SOURCE

09/718,472 | U.S. Patent Application

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Location FILE REPOSITORY (FRANCONIA)

Filed Nov. 17, 2000

Examiner PHILLIP A JOHNSTON

Class 250

Art Group 2881

Patent No. 6,646,253

Case Type Utility - 250/288000

Status Patent Expired Due to NonPayment of Maintenance Fees Under 37 CFR 1.362

Parent PCT/EP99/03420 -

Child 198 22 674.8

Last Updated: 4 years, 8 months ago

Date	#	Transaction
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GAS INLET FOR AN ION SOURCE

09/718,472 | U.S. Patent Application

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