1
Antonin Holy, Ivan Rosenberg: 9-(phosponylmethoxyalkyl) adenines, the method of preparation and utilization thereof. Ceskoslovenska akademic ved, Leydig Voit Mayer, February 28, 1989: US04808716 (71 worldwide citation)

The invention relates to 9-(phosphonylmethoxyalkyl)adenines of the general formula I ##STR1## wherein R.sup.1 is a hydrogen atom, and alkyl group containing one to three carbon atoms, or a hydroxymethyl group, R.sup.2 is a methylene, ethylene, propylene, ethylidene, methoxyethylene, benzyloxyethylen ...


2
Mackrle Svatopluk, Mackrle Vladimir: Arrangement for continuous treatment of polluted liquids. Ceskoslovenska Akademic Ved, Schaffer Murray, June 11, 1974: US3815750 (6 worldwide citation)

Polluted liquids are treated by a bioflocculation process and the thus obtained floccular suspecsion is separated by filtration in a perfectly floating sludge blanket, whereby prior to filtration, the suspension, created in the course of the bioflocculation process, is subjected to a sedimentation, ...


3
Haskovec Jiri Stephan, Vasilieva Natalia Petrovna: Inverter. Ceskoslovenska Akademic Ved No, August 4, 1965: GB1000512-A

1,000,512. Controlled non-linear inductors. CESKOSLOVENSKA AKADEMIE VED NO. 3. Sept. 19, 1961, No. 33471/61. Heading H3B. A magnetic complementing amplifier comprises a core 3 having a rectangular hysteresis loop and associated control and output windings 2, 6, the control winding being connected be ...