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Patent applications and USPTO patent grants for Haglund; Stephen A..The latest application filed is for "thermal welding of fiber reinforced thermoplastic prepreg".
Patent | Date |
---|---|
Thermal welding of fiber reinforced thermoplastic prepreg Grant 6,162,314 - Kassuelke , et al. December 19, 2 | 2000-12-19 |
Self-checking photoelectric smoke detector Grant 4,306,230 - Forss , et al. December 15, 1 | 1981-12-15 |
Interconnection of alarms of smoke detectors with distinguishable alarms Grant 4,282,519 - Haglund , et al. August 4, 1 | 1981-08-04 |
Rechargeable battery backup power source for an ionization smoke detector device Grant 4,155,081 - Haglund May 15, 1 | 1979-05-15 |
Low battery voltage detector Grant 4,119,904 - Haglund October 10, 1 | 1978-10-10 |
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