Kwong Keung Tung

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Kowloon, CN

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Patents Grantslast 30 patents

Information Patent Grant
Rotary can opener
- Patent number 9,352,947
- Issue date May 31, 2016
- Daka Research Inc. (British Virgin Islands Corporation)
- Pat Y. Mah
- B67 - OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS LIQUID...
Information Patent Grant
Rotary can opener
- Patent number 8,539,682
- Issue date Sep 24, 2013
- Daka Research Inc. (British Virgin Islands Corporation)
- Pat Y. Mah
- B67 - OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS LIQUID...
Information Patent Grant
Multi-function can opener
- Patent number D643269
- Issue date Aug 16, 2011
- Daka Research Inc.
- Pat Y. Mah
- D08 - Tools and hardware
Information Patent Grant
Can opener
- Patent number D634597
- Issue date Mar 22, 2011
- Daka Research Inc.
- Pat Y. Mah
- D08 - Tools and hardware

Patents Applicationslast 30 patents

Information Patent Application
ROTARY CAN OPENER
- Publication number 20140101946
- Publication date Apr 17, 2014
- DAKA RESEARCH INC., (A BRITISH VIRGIN ISLANDS CORPORATION)
- PAT Y. MAH
- B67 - OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS LIQUID...
Information Patent Application
Rotary can opener
- Publication number 20120047753
- Publication date Mar 1, 2012
- Pat Y. Mah
- B67 - OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS LIQUID...