Stephen A. Haglund

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Minnetonka, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Self-checking photoelectric smoke detector
- Patent number 4,306,230
- Issue date Dec 15, 1981
- Honeywell Inc.
- John A. Forss
- G08 - SIGNALLING
Information Patent Grant
Interconnection of alarms of smoke detectors with distinguishable a...
- Patent number 4,282,519
- Issue date Aug 4, 1981
- Honeywell Inc.
- Stephen A. Haglund
- G08 - SIGNALLING
Information Patent Grant
Abnormal condition responsive means with periodic high sensitivity
- Patent number 4,222,046
- Issue date Sep 9, 1980
- Honeywell Inc.
- B. Hubert Pinckaers
- G08 - SIGNALLING
Information Patent Grant
Rechargeable battery backup power source for an ionization smoke de...
- Patent number 4,155,081
- Issue date May 15, 1979
- Honeywell Inc.
- Stephen A. Haglund
- G08 - SIGNALLING
Information Patent Grant
Low battery voltage detector
- Patent number 4,119,904
- Issue date Oct 10, 1978
- Honeywell Inc.
- Stephen A. Haglund
- G01 - MEASURING TESTING