1
Steven Ware, Howard Hayman: Laboratory flask stirrer assembly attachable with a nut and bolt. Chemglass, Lowe Price LeBlanc & Becker, July 5, 1994: US05326167 (4 worldwide citation)

A stirring system for stirring contents in a laboratory flask having a round or spherical bottom and a reduced neck includes a stirrer shaft manufactured with a ring at the lower end thereof which permits attachment of a blade with a nut and bolt made of TEFLON material. The nut and bolt prevents th ...


2
Howard Hayman: Segmented reaction blocks for supporting vials of different sizes for chemical synthesis on a hot plate stirrer. Chemglass, Fitzpatrick Cella Harper & Scinto, March 6, 2008: US20080056957-A1

A laboratory device for mounting vials of different volumes upon a laboratory hot plate stirrer that is made of a heat conducting material that does not interfere with a magnetic flux. A base holder with an upper surface and a circumferential upper lip engage one or more single-shaped reaction block ...