DK70623C - Elektrisk lyddåse med piezoelektrisk krystal. - Google Patents

Elektrisk lyddåse med piezoelektrisk krystal.

Info

Publication number
DK70623C
DK70623C DK498947A DK498947A DK70623C DK 70623 C DK70623 C DK 70623C DK 498947 A DK498947 A DK 498947A DK 498947 A DK498947 A DK 498947A DK 70623 C DK70623 C DK 70623C
Authority
DK
Denmark
Prior art keywords
sound box
piezoelectric crystal
electric sound
electric
piezoelectric
Prior art date
Application number
DK498947A
Other languages
English (en)
Inventor
Hans Christian Hansen
Original Assignee
Hans Christian Hansen
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 Hans Christian Hansen filed Critical Hans Christian Hansen
Priority to DK498947A priority Critical patent/DK70623C/da
Application granted granted Critical
Publication of DK70623C publication Critical patent/DK70623C/da

Links

DK498947A 1947-12-29 1947-12-29 Elektrisk lyddåse med piezoelektrisk krystal. DK70623C (da)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DK498947A DK70623C (da) 1947-12-29 1947-12-29 Elektrisk lyddåse med piezoelektrisk krystal.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK498947A DK70623C (da) 1947-12-29 1947-12-29 Elektrisk lyddåse med piezoelektrisk krystal.

Publications (1)

Publication Number Publication Date
DK70623C true DK70623C (da) 1950-02-13

Family

ID=8138449

Family Applications (1)

Application Number Title Priority Date Filing Date
DK498947A DK70623C (da) 1947-12-29 1947-12-29 Elektrisk lyddåse med piezoelektrisk krystal.

Country Status (1)

Country Link
DK (1) DK70623C (da)

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