Sir Henry Lawson-Tancred, Sons & Co., Ltd.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4692095 Wind turbine bladesExpiredDec 12, 85Sep 08, 87[F03D]
4280061 Method and apparatus for generating electricity from a fixed pitch wind wheelExpiredOct 25, 78Jul 21, 81[H02P, F16D, F03D, F01B]
4274010 Electric power generationExpiredNov 29, 77Jun 16, 81[F03D]

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