CA306943A - Appareil a demontrer les proprietes absorbantes des sons - Google Patents

Appareil a demontrer les proprietes absorbantes des sons

Info

Publication number
CA306943A
CA306943A CA306943A CA306943DA CA306943A CA 306943 A CA306943 A CA 306943A CA 306943 A CA306943 A CA 306943A CA 306943D A CA306943D A CA 306943DA CA 306943 A CA306943 A CA 306943A
Authority
CA
Canada
Prior art keywords
absorbing properties
demonstrating sound
demonstrating
sound
absorbing
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
CA306943A
Other languages
English (en)
Inventor
Frederick Burgess Charles
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.)
CF Burgess Laboratories Inc
Original Assignee
CF Burgess Laboratories Inc
Publication date
Application granted granted Critical
Publication of CA306943A publication Critical patent/CA306943A/fr
Expired legal-status Critical Current

Links

CA306943A Appareil a demontrer les proprietes absorbantes des sons Expired CA306943A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA306943T

Publications (1)

Publication Number Publication Date
CA306943A true CA306943A (fr) 1930-12-23

Family

ID=35260094

Family Applications (1)

Application Number Title Priority Date Filing Date
CA306943A Expired CA306943A (fr) Appareil a demontrer les proprietes absorbantes des sons

Country Status (1)

Country Link
CA (1) CA306943A (fr)

Similar Documents

Publication Publication Date Title
CA306943A (fr) Appareil a demontrer les proprietes absorbantes des sons
CA296294A (fr) Appareil d'audio-amplifications
CA297899A (fr) Appareil a capter l'or
CA299600A (fr) Appareil a deplacement de rouleaux
CA300127A (fr) Appareil a production de pulpe
CA300783A (fr) Appareil a poinconner les billets
CA302470A (fr) Projecteur de fluide
CA303518A (fr) Appareil a manoeuvrer les briques
CA304192A (fr) Appareil a poinconner les billets
CA304249A (fr) Appareil a faire le change
CA299535A (fr) Appareil a reproduire les sons
CA305386A (fr) Appareil a faire des emulsions
CA305046A (fr) Appareil phonographique
CA305766A (fr) Appareil pour construction de routes
CA299447A (fr) Appareil de mesure
CA303796A (fr) Appareil de mesure
CA303797A (fr) Appareil de mesure
CA306264A (fr) Appareil de mesure
CA304373A (fr) Appareil a mesurer
CA302658A (fr) Appareil de solidification de gaz
CA298974A (fr) Appareil de projection episcopique
CA306517A (fr) Appareil de graissage
CA307059A (fr) Appareil de graissage
CA302794A (fr) Appareil developpateur
CA302795A (fr) Appareil developpateur