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John Stenhouse's respirator. John Stenhouse was born in Barrhead in Glasgow on 21 October 1809. He was the eldest son of William Stenhouse, a calico-printer in the family firm of John Stenhouse & Co of 302 High Street, [2] Glasgow, and Elizabeth Currie; [3] he was the only one of their children to survive beyond infancy.
Wikipedia entry for Google Patents.Google Patents is a search engine from Google that indexes patents and patent applications from the United States Patent and Trademark Office.
An air purifier or air cleaner is a ... John Stenhouse filed two patents applying the absorbent properties of wood charcoal to air purification (patents 19 July ...
Woodcut of Stenhouse's mask. In 1848, the first US patent for an air-purifying respirator was granted to Lewis P. Haslett [5] for his 'Haslett's Lung Protector,' which filtered dust from the air using one-way clapper valves and a filter made of moistened wool or a similar porous substance. [6]
Patent Office Head [1] Began service: Ended service: Commissioners for the Promotion of Useful Arts or Patent Board [2] Edmund Randolph Henry Knox Thomas Jefferson: 1790: 1793 Secretary of State [3] [2] Edmund Randolph: 1794: 1795 Timothy Pickering: 1795: May 12, 1800 John Marshall: May 13, 1800: March 4, 1801 James Madison: March 5, 1801: 1802 ...
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In former United States patent law, a statutory invention registration (SIR) was a publication of an invention by the United States Patent and Trademark Office (USPTO). [1] The publication was made at the request of the applicant (i.e. inventor(s) or assignee(s)). [2]
John Bardeen (1908–1991), U.S. – co-inventor of the transistor, with Brattain and Schockley Vladimir Barmin (1909–1993), Russia – first rocket launch complex ( spaceport ) Anthony R. Barringer (1925–2009), Canada/U.S. – INPUT (Induced Pulse Transient) airborne electromagnetic system
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related to: john stenhouse air purifier patent office search by inventor name and zip code