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B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
B24B55/06—Dust extraction equipment on grinding or polishing machines
D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
D04B15/66—Devices for determining or controlling patterns ; Programme-control arrangements
D04B15/68—Devices for determining or controlling patterns ; Programme-control arrangements characterised by the knitting instruments used
D04B15/70—Devices for determining or controlling patterns ; Programme-control arrangements characterised by the knitting instruments used in flat-bed knitting machines
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FR702107D1930-07-231930-07-23Appareil de captation et d'évacuation d'air chargé de poussières, gaz, vapeurs, etc.
ExpiredFR702107A
(fr)
Dispositif d'épuration d'air et de gaz, spécialement applicable aux aspirateurs depoussière, ventilateurs d'exhaustion et collecteurs de poussière des rues