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Ref No	33-B/5/2/6
Title	File relating to Improvements in Butterfly Valves
Description	Including; patent specifcations for patent no.s 753,860, 651,114, 880,835, 896,978, and 926,341; leaflet on Boving butterfly valves; and draft Guest and Chrimes patent for improvements in and relating to valves.
Date	c. 1965
Format	Typescript
Extent	1 File
Access Status	Open

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