Pawel WITCZAK

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Lodz, PL

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Patents Grantslast 30 patents

Information Patent Grant
Method of assembling an elevator machine frame
- Patent number 9,457,994
- Issue date Oct 4, 2016
- Otis Elevator Company
- Zbigniew Piech
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Magnetic elevator door coupler
- Patent number 8,776,953
- Issue date Jul 15, 2014
- Otis Elevator Company
- HakKi Han
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Elevator machine frame
- Patent number 8,631,907
- Issue date Jan 21, 2014
- Otis Elevator Company
- Zbigniew Piech
- B66 - HOISTING LIFTING HAULING

Patents Applicationslast 30 patents

Information Patent Application
METHOD OF ASSEMBLING AN ELEVATOR MACHINE FRAME
- Publication number 20140101916
- Publication date Apr 17, 2014
- Otis Elevator Company
- Zbigniew PIECH
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
MAGNETIC ELEVATOR DOOR COUPLER
- Publication number 20100282546
- Publication date Nov 11, 2010
- Hakki Han
- B66 - HOISTING LIFTING HAULING