NL176726B - SOUND AMPLIFIER WITH A DEVICE FOR SUPPRESSING AN ACTIVITY SOUND. - Google Patents

SOUND AMPLIFIER WITH A DEVICE FOR SUPPRESSING AN ACTIVITY SOUND.

Info

Publication number
NL176726B
NL176726B NLAANVRAGE7306421,B NL176726DB NL176726B NL 176726 B NL176726 B NL 176726B NL 176726D B NL176726D B NL 176726DB NL 176726 B NL176726 B NL 176726B
Authority
NL
Netherlands
Prior art keywords
sound
suppressing
activity
amplifier
sound amplifier
Prior art date
Application number
NLAANVRAGE7306421,B
Other languages
Dutch (nl)
Original Assignee
Hitachi Ltd
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.)
Publication of NL176726B publication Critical patent/NL176726B/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
    • C01B13/10—Preparation of ozone
    • C01B13/11—Preparation of ozone by electric discharge
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2201/00—Preparation of ozone by electrical discharge
    • C01B2201/10—Dischargers used for production of ozone
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2201/00—Preparation of ozone by electrical discharge
    • C01B2201/20—Electrodes used for obtaining electrical discharge
    • C01B2201/22—Constructional details of the electrodes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Oxygen, Ozone, And Oxides In General (AREA)
NLAANVRAGE7306421,B 1952-03-15 SOUND AMPLIFIER WITH A DEVICE FOR SUPPRESSING AN ACTIVITY SOUND. NL176726B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH2778795X 1952-03-15

Publications (1)

Publication Number Publication Date
NL176726B true NL176726B (en)

Family

ID=4571714

Family Applications (2)

Application Number Title Priority Date Filing Date
NLAANVRAGE7306421,B NL176726B (en) 1952-03-15 SOUND AMPLIFIER WITH A DEVICE FOR SUPPRESSING AN ACTIVITY SOUND.
NL84219D NL84219C (en) 1952-03-15

Family Applications After (1)

Application Number Title Priority Date Filing Date
NL84219D NL84219C (en) 1952-03-15

Country Status (5)

Country Link
US (1) US2778795A (en)
BE (1) BE518398A (en)
CH (1) CH298687A (en)
FR (1) FR1077018A (en)
NL (2) NL84219C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2224403B1 (en) * 1973-04-06 1976-06-11 Botcharoff Jacqueline
WO1989000975A1 (en) * 1987-08-03 1989-02-09 Philipp Leicher Ozone generating apparatus

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1024533A (en) * 1911-05-09 1912-04-30 Westinghouse Electric & Mfg Co Ozonizer.
US1125900A (en) * 1913-04-09 1915-01-19 Edwards Instr Company Ozonator.
US1505751A (en) * 1922-06-10 1924-08-19 Alexander C Tener Manufacture of ozonized air
US1577747A (en) * 1924-10-29 1926-03-23 Electric Water Sterilizer And Air-cooled generating unit for low-frequency apparatus
GB255764A (en) * 1925-12-10 1926-07-29 John Robert Quain Improvements in connection with ozonising apparatus
GB354702A (en) * 1929-02-12 1931-08-13 Vittorio Gambarotta
US1864174A (en) * 1930-09-11 1932-06-21 Dean W Davis Ozone generator

Also Published As

Publication number Publication date
BE518398A (en)
NL84219C (en)
FR1077018A (en) 1954-11-03
CH298687A (en) 1954-05-15
US2778795A (en) 1957-01-22

Similar Documents

Publication Publication Date Title
NL178632B (en) AMPLIFIER.
NL182034C (en) DEVICE FOR COVERING A RECESS IN A HOUSE, PARTICULARLY FOR USE IN A MAGNETIC TAPE RECORDER.
NL181914B (en) DEVICE FOR MANUFACTURE OF DRAWN OBJECTS.
NL171532B (en) IMPROVEMENT OF A DEVICE FOR KEEPING THE ENVIRONMENT OF AN OPERATION TABLE GROUND-FREE.
NL186938B (en) DEVICE FOR TRANSMISSION OF SOUND WAVES.
NL178570B (en) METHOD AND DEVICE FOR THE MANUFACTURE OF CASTS BY MEANS OF VACUUM.
NL178125C (en) METHOD FOR PREPARING AN AROMA DUST.
NL170603B (en) METHOD AND DEVICE FOR CUTTING SPLACES FROM A PLASTIC STRENGTH.
NL173091B (en) DEVICE FOR SUSPENDED AND SHOCK ABSORBING ATTACHING AN OBJECT TO A PEDESTAL AT THE SAME TIME.
NL176726B (en) SOUND AMPLIFIER WITH A DEVICE FOR SUPPRESSING AN ACTIVITY SOUND.
NL179681B (en) DEVICE FOR BURNING WASTE GASES.
NL175527B (en) METHOD OF PREPARING A ADHESIVE SOLUTION BASED ON A POLYURETHAN.
NL176330B (en) DEVICE FOR MAKING A CROSS CUT IN A SEXED BIRD.
NL175317B (en) PROCEDURE FOR PREPARING AN AMYLASE INHIBITOR.
NL177973B (en) DEVICE FOR CUTTING SEXED BIRDS.
NL182628B (en) DEVICE FOR FORMING PLASTIC OBJECTS WITH AN RECESSED PART.
NL177738B (en) DEVICE FOR SETTING A TYPE CARRIER.
NL175422B (en) METHOD FOR PREPARING AN ALKEEN POLYMERIZATION CATALYST ON A SUPPORT AND METHOD FOR PERFORMING A POLYMERIZATION.
NL179753B (en) SELF-PROPELLED RECORDING DEVICE FOR RECORDING MATERIALS LYING ON THE SEABED.
NL154532B (en) METHOD OF PREPARING A POLYAMIDEIMIDE PREPARATOR.
NL163095B (en) DEVICE FOR SILING CROP.
NL178212B (en) DEVICE FOR REDUCING THE FREQUENCY OF A PULSE SERIES.
NL176523C (en) CLOSET GLASSES, FITTED WITH A DEVICE FOR APPLYING A HOSE-SHAPED PROTECTION COVER.
NL186748B (en) DEVICE FOR STICKING SLICES ONTO A SHEET.
NL178224B (en) DEVICE FOR HANDLING BODY FLUIDS.