72393245
May 27, 1971
May 16, 1972
REVERSE OSMOSIS AND ULTRA-FILTRATION MEMBRANE SYSTEMS, COMPRISING SELF-SUPPORTED TUBULAR MEMBRANES, MODULES OF TUBULAR MEMBRANES, SHEET MEMBRANES, MEMBRANE TEST CELLS; [ GAS AND LIQUID CHROMATOGRAPHIC SYSTEMS COMPRISING COLUMN CORRECTION BAFFLES, CHROMATOGRAPHIC COLUMNS, CHROMATOGRAPHIC FRACTION COLLECTORS, INJECTION VAPORIZERS, CHROMATOGRAPHIC FRACTION DETECTORS, CHROMATOGRAPHIC FRACTION COLLECTION SELECTORS AND CONTROLS; ] AND COMPONENTS PARTS OF THE FOREGOING
Natural Agricultural Products