FR520293A - Improvements in ventilators - Google Patents

Improvements in ventilators

Info

Publication number
FR520293A
FR520293A FR520293A FR520293DA FR520293A FR 520293 A FR520293 A FR 520293A FR 520293 A FR520293 A FR 520293A FR 520293D A FR520293D A FR 520293DA FR 520293 A FR520293 A FR 520293A
Authority
FR
France
Prior art keywords
ventilators
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
FR520293A
Other languages
French (fr)
Inventor
James Keith
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of FR520293A publication Critical patent/FR520293A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
FR520293A 1919-07-12 1920-07-10 Improvements in ventilators Expired FR520293A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB520293X 1919-07-12

Publications (1)

Publication Number Publication Date
FR520293A true FR520293A (en) 1921-06-23

Family

ID=10462358

Family Applications (1)

Application Number Title Priority Date Filing Date
FR520293A Expired FR520293A (en) 1919-07-12 1920-07-10 Improvements in ventilators

Country Status (1)

Country Link
FR (1) FR520293A (en)

Similar Documents

Publication Publication Date Title
FR510830A (en) Improvements in umbrellas
FR520293A (en) Improvements in ventilators
FR518385A (en) Improvements in jacks
FR513707A (en) Improvements in cogwheels
FR500410A (en) Improvements in the construction of switch-switches
FR500559A (en) Improvements in clinometers
FR535314A (en) Improvements in ventilators
FR502581A (en) Improvements in the suspenders
FR519067A (en) Improvements in ovens
FR507150A (en) Improvements in carburetors
FR505503A (en) Improvements in incubators
FR498574A (en) Improvements in envelopes
FR515344A (en) Improvements in regulators
FR525781A (en) Improvements in carburetors
FR520712A (en) Improvements in carburetors
FR502850A (en) Improvements in boilers
FR540576A (en) Improvements in valves
FR496888A (en) Improvements in valves
FR499152A (en) Improvements in airplanes
FR520825A (en) Improvement in microphones
FR501198A (en) Improvements in calenders
FR516019A (en) Improvements in plows
FR501589A (en) Improvements in thrusters
FR530832A (en) Improvements in alloys
FR497073A (en) Improvements in open-breasted stoves