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Intelligent walking stick
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Patent number 5,973,618
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Issue date Oct 26, 1999
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Christ G. Ellis
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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White stick for blind persons
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Patent number 5,816,277
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Issue date Oct 6, 1998
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Techn-O-Tape, BV
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Reindert Jan Jansen
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Dual handled cane
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Patent number 5,495,867
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Issue date Mar 5, 1996
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Momentum Medical Corp.
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Randall D. Block
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Cane tip
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Patent number 5,301,703
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Issue date Apr 12, 1994
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Melvin Kahn
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Safety walking cane
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Patent number 5,056,545
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Issue date Oct 15, 1991
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Phillip A. Spaeth
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A45 - HAND OR TRAVELLING ARTICLES
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Blind guide device
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Patent number 4,648,710
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Issue date Mar 10, 1987
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Itsuki Ban
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G01 - MEASURING TESTING
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Demountable stick
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Patent number 3,963,037
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Issue date Jun 15, 1976
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New Zealand Inventions Development Authority
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George Reginald Seymour Clark
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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3906971
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Patent number 3,906,971
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Issue date Sep 23, 1975
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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3546467
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Patent number 3,546,467
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Issue date Dec 8, 1970
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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3223099
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Patent number 3,223,099
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Issue date Dec 14, 1965
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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3158162
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Patent number 3,158,162
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Issue date Nov 24, 1964
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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3158851
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Patent number 3,158,851
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Issue date Nov 24, 1964
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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3029828
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Patent number 3,029,828
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Issue date Apr 17, 1962
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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2683461
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Patent number 2,683,461
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Issue date Jul 13, 1954
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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2610420
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Patent number 2,610,420
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Issue date Sep 16, 1952
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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2077569
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Patent number 2,077,569
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Issue date Apr 20, 1937
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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1542894
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Patent number 1,542,894
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Issue date Jun 23, 1925
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE