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Patents Grantslast 30 patents

Information Patent Grant
Pistons
- Patent number 5,913,960
- Issue date Jun 22, 1999
- Wellworthy Limited
- David Francis Fletcher-Jones
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Method of making a piston
- Patent number 4,997,024
- Issue date Mar 5, 1991
- T&N Technology Limited
- Andrew T. Cole
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Pistons for internal combustion engines
- Patent number 4,989,559
- Issue date Feb 5, 1991
- Wellworthy Limited
- David F. Fletcher-Jones
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Pistons
- Patent number 4,228,727
- Issue date Oct 21, 1980
- Wellworthy Limited
- David C. Speaight
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Pistons
- Patent number 4,114,519
- Issue date Sep 19, 1978
- Wellworthy Limited
- David Clement Speaight
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Sealing ring assemblies for pistons
- Patent number 4,111,438
- Issue date Sep 5, 1978
- Wellworthy Limited
- Gerald Longfoot
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Trademarklast 30 trademarks

Information Trademark
73180588 - SPECIALLOID
- Serial number 73180588
- Registration number 1245003
- Filing date Feb 26, 1979
- Wellworthy Limited
- 7 - Machines and machine tools
Information Trademark
73060344 - WVY
- Serial number 73060344
- Registration number 1041179
- Filing date Aug 13, 1975
- WELLWORTHY LIMITED
- 7 - Machines and machine tools
Information Trademark
72161578 - WELLWORTHY
- Serial number 72161578
- Registration number 801751
- Filing date Jan 28, 1963
- WELLWORTHY LIMITED
- 7 - Machines and machine tools