WALPIN, LIONEL A., M.D.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4853903 Method and apparatus for removing sinusoidal noise from seismic dataExpiredOct 19, 88Aug 01, 89[G01V]
4850068 Multi-dimensional pillowExpiredJun 29, 87Jul 25, 89[A47C]
4835801 Back support cushionExpiredNov 19, 87Jun 06, 89[A47C]
D278775 Furniture leg or similar articleExpiredFeb 04, 83May 14, 85[]
D278669 Pillow rackExpiredAug 17, 82May 07, 85[]
D278497 Pillow rackExpiredAug 17, 82Apr 23, 85[]

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