FR816581A - Air cleaning and drying - Google Patents

Air cleaning and drying

Info

Publication number
FR816581A
FR816581A FR816581DA FR816581A FR 816581 A FR816581 A FR 816581A FR 816581D A FR816581D A FR 816581DA FR 816581 A FR816581 A FR 816581A
Authority
FR
France
Prior art keywords
drying
air cleaning
cleaning
air
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
Other languages
French (fr)
Inventor
Walter Andre Maurice
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 filed Critical
Application granted granted Critical
Publication of FR816581A publication Critical patent/FR816581A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/22—Automatic control in amplifiers having discharge tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F6/00—Air-humidification, e.g. cooling by humidification
    • F24F6/02—Air-humidification, e.g. cooling by humidification by evaporation of water in the air
    • F24F6/06—Air-humidification, e.g. cooling by humidification by evaporation of water in the air using moving unheated wet elements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/06—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes
    • H03D7/10—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes the signals to be mixed being applied between different pairs of electrodes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • H03F1/36—Negative-feedback-circuit arrangements with or without positive feedback in discharge-tube amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/02—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with tubes only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
FR816581D 1937-01-16 1937-01-16 Air cleaning and drying Expired FR816581A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR816581T 1937-01-16

Publications (1)

Publication Number Publication Date
FR816581A true FR816581A (en) 1937-08-11

Family

ID=31985475

Family Applications (1)

Application Number Title Priority Date Filing Date
FR816581D Expired FR816581A (en) 1937-01-16 1937-01-16 Air cleaning and drying

Country Status (1)

Country Link
FR (1) FR816581A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1256628B (en) * 1957-02-08 1967-12-21 Walter Preiss Device for cleaning the wetting agent of several belt circulation filters for air

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1256628B (en) * 1957-02-08 1967-12-21 Walter Preiss Device for cleaning the wetting agent of several belt circulation filters for air

Similar Documents

Publication Publication Date Title
FR837422A (en) Shoulder cushions
FR816581A (en) Air cleaning and drying
FR834672A (en) Improvements to the intermittent and automatic flow of various materials
FR48714E (en) Installation for drying air and other gases
FR808092A (en) Air heater
FR827969A (en) Air humidifier
FR836338A (en) Dry washer
FR837000A (en) Bulking materials and thickening agents
FR797680A (en) toxic air cleaner
FR759596A (en) Air dryer
FR832086A (en) air purifier
FR816679A (en) Air conditioner
FR829764A (en) Air conditioner
FR818009A (en) Brush
FR843583A (en) Wetting and emulsifying agents
FR829080A (en) Per 1937
FR838700A (en) Atomizer
ES143924A2 (en) IMPROVEMENTS IN THE PATENT 143484
FR842795A (en) Apartment fountain
FR830412A (en) Tool-pocket opening set
FR824288A (en) Improvements to the ventilation of the premises
FR847640A (en) Stretching ball improvements
CA362485A (en) Air cleaner and washer
FI19163A (en) Hand brush
CA369118A (en) Air cleaning device