PROBLEM TO BE SOLVED: To prevent a vacuum space from being contaminated with dust generated from a mechanism while driving a valve plate for opening and closing a communication port in a valve casing in a vacuum gate valve between front and rear vacuum vessels by a mechanical mechanism. ;SOLUT...
1336537 Stackable crates BEKAERT SA NV 28 July 1972 [30 July 1971] 35508/72 Heading B8P A crate for flower pots comprises a base 3 of wires 4, 5, 15 and 16 and a compartmentdefining grid 2 of wires 13 and 14, the wires 14 defining two sides of the grid being spaced from the adj...