Westland Aircraft Limited

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B60V AIR-CUSHION VEHICLES 14

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
RE30694 Flexible skirt components for air cushion vehiclesAug 28, 78Aug 04, 81[B60V]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4473200 Stores handling apparatus and systemExpiredDec 10, 80Sep 25, 84[B64F]
4436483 Helicopter rotorsExpiredJan 08, 82Mar 13, 84[B64C]
4427344 Helicopter rotor bladeExpiredMar 13, 81Jan 24, 84[B64C]
4420131 Mooring devicesExpiredNov 03, 81Dec 13, 83[B64F]
4397254 Apparatus for moving a helicopter along a deckExpiredJul 15, 80Aug 09, 83[B63B]
4370542 Cable marking method and apparatusExpiredMay 18, 81Jan 25, 83[B23K, B41F]
4347997 HelicoptersExpiredMar 24, 80Sep 07, 82[B64C]
4320633 Freewheel couplingExpiredDec 18, 79Mar 23, 82[F16D]
4307996 Helicopter rotorsExpiredNov 07, 79Dec 29, 81[B64C]
4300200 Helicopter airspeed indicating systemExpiredNov 23, 79Nov 10, 81[G06F]
4297078 Helicopter rotorsExpiredMay 09, 79Oct 27, 81[B64C]
4249862 Damper means for helicopter rotorsExpiredDec 05, 77Feb 10, 81[B64C]
4231705 Helicopter rotorExpiredSep 07, 78Nov 04, 80[B64C]
4225287 Vibration absorber for helicopterExpiredNov 06, 78Sep 30, 80[F16C, B64C]
4203709 Helicopter rotor and blade connectionExpiredSep 07, 78May 20, 80[B64C]
4200946 Load-supporting structuresExpiredNov 16, 78May 06, 80[E01D]

Top Inventors for This Owner

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