US Patent 4,038,878 - Excel scan 4

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US Patent # 4,038,878 - Excel
scan 4 of 4

Publisher: US Patent and Trademark Office
Document: US Patent # 4,038,878 - Excel
Date: priority date May 1976
Derailleur brands: Excel, Elgin
Derailleurs: Excel, Elgin American

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US Patent 4,038,878 - Excel scan 04 main image

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Elgin American derailleur (1st style) thumbnail

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Excel derailleur thumbnail

Elgin American (1st style) 1975?

Elgin American (2nd style) 1977?

Excel 1977?