What happened in the 1880s?
π First Practical Smoke Detector Patented (1881): Advances in safety technology and its adoption.
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Further Reading
Fire Safety History 101: History of Smoke Detectors - Certasite (certasitepro.com)
Smoke Alarm History - MySmokeAlarm (mysmokealarm.org)
The History of Fire Alarms and Smoke Detectors - Protect & Detect (co.uk)
Smoke detector - Wikipedia (wikipedia.org)
How Were Smoke Detectors Invented? - Spivey Insurance Group (spiveyinsurancegroup.com)
History of Smoke Detectors - Inspect Point (inspectpoint.com)
A brief history of fire alarm systems - EPS Security (epssecurity.com)
National Safety Month Feature: The History of the Smoke Detector (mistersparky.com)
Frederikssund Private Realskole - Eksternt link (skoleporten.dk)