Daniel R. Drop

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Durham, CT, US

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Patents Grantslast 30 patents

Information Patent Grant
Automatic elevator destination call processing
- Patent number 6,397,976
- Issue date Jun 4, 2002
- Otis Elevator Company
- Charles F. Hale
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Processing and registering automatic elevator cell destinations
- Patent number 6,202,799
- Issue date Mar 20, 2001
- Otis Elevator Company
- Daniel R. Drop
- B66 - HOISTING LIFTING HAULING