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David M. Cirkot
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Ansonia, CT, US
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last 30 patents
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Patent Grant
Traffic responsive control system for automatic swinging door
Patent number
4,698,937
Issue date
Oct 13, 1987
The Stanley Works
Henning N. Kornbrekke
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information
Patent Grant
Traffic responsive control system
Patent number
4,669,218
Issue date
Jun 2, 1987
The Stanley Works
Henning N. Kornbrekke
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information
Patent Grant
Traffic responsive control system for automatic swinging door
Patent number
4,565,029
Issue date
Jan 21, 1986
The Stanley Works
Henning N. Kornbrekke
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES