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David H. Ayer
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Cedar Rapids, IA, US
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last 30 patents
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Patent Grant
Customer terminal for a single tube pneumatic system for banking an...
Patent number
4,930,941
Issue date
Jun 5, 1990
Inter Innovation LeFebure Mfg. Corp.
Clair L. Willey
B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL