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Felix Theeuwes, Richard J Saunders, Wayne S Mefford: Process for forming outlet passageways in pills using a laser. Alza Corporation, Thomas E Ciotti, Paul L Sabatine, Edward L Mandell, May 9, 1978: US04088864 (424 worldwide citation)

A high speed process and apparatus are disclosed for forming outlet passageways of accurate, predetermined size in the walls of pills which dispense their contents by osmotically pumping said contents out said outlet passageways. The pills are moved in succession by an indexer past a passageway form ...


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Process for forming outlet passageways in pills using a laser. Alza, July 6, 1977: GB1478759-A

1478759 Forming outlet passageways in pills ALZA CORP 30 Oct 1975 [18 Nov 1974] 45037/75 Heading B2E Outlet passageways 13 4-2000 Á in diameter are formed in pills 10 by charging the pills to hopper 33 from which they drop by gravity into slots 32 of rotating feed wheel 28. Wheel 28 carries the pill ...