Search Results

Ref No	33-B/5/2/4
Title	Butterfly Valves Patent Specification, No. 926,341
Description	Patent specification for improvements in butterfly valves as devised by Frank Edward Swain. Includes drawings.
Date	15 May 1963
Format	Typescript
Extent	1 Item
Access Status	Open

HINT: Click on the RefNo to view the whole collection.

Record