Mary Ann T. Valk

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Glastonbury, CT, US

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Patents Grantslast 30 patents

Information Patent Grant
Passenger conveyor handrail having a gripping surface with a genera...
- Patent number 7,614,490
- Issue date Nov 10, 2009
- Otis Elevator Company
- John M. Milton-Benoit
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Elevator dispatching with balanced passenger perception of waiting
- Patent number 7,475,757
- Issue date Jan 13, 2009
- Otis Elevator Company
- Mary Ann T. Valk
- B66 - HOISTING LIFTING HAULING

Patents Applicationslast 30 patents

Information Patent Application
Passenger Conveyor Handrail Having a Gripping Surface with a Genera...
- Publication number 20080202890
- Publication date Aug 28, 2008
- John M. Milton-Benoit
- B66 - HOISTING LIFTING HAULING