ES75998A1 - Improvements in rheostats for telephone instruments. - Google Patents

Improvements in rheostats for telephone instruments.

Info

Publication number
ES75998A1
ES75998A1 ES75998A ES75998A ES75998A1 ES 75998 A1 ES75998 A1 ES 75998A1 ES 75998 A ES75998 A ES 75998A ES 75998 A ES75998 A ES 75998A ES 75998 A1 ES75998 A1 ES 75998A1
Authority
ES
Spain
Prior art keywords
rheostats
telephone instruments
instruments
telephone
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
ES75998A
Other languages
Spanish (es)
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.)
DICTOGRAPH PRODUCTS CORP
Original Assignee
DICTOGRAPH PRODUCTS CORP
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 DICTOGRAPH PRODUCTS CORP filed Critical DICTOGRAPH PRODUCTS CORP
Priority to ES75998A priority Critical patent/ES75998A1/en
Publication of ES75998A1 publication Critical patent/ES75998A1/en
Expired legal-status Critical Current

Links

ES75998A 1920-10-16 1920-10-16 Improvements in rheostats for telephone instruments. Expired ES75998A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES75998A ES75998A1 (en) 1920-10-16 1920-10-16 Improvements in rheostats for telephone instruments.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES75998A ES75998A1 (en) 1920-10-16 1920-10-16 Improvements in rheostats for telephone instruments.

Publications (1)

Publication Number Publication Date
ES75998A1 true ES75998A1 (en) 1921-01-16

Family

ID=64245390

Family Applications (1)

Application Number Title Priority Date Filing Date
ES75998A Expired ES75998A1 (en) 1920-10-16 1920-10-16 Improvements in rheostats for telephone instruments.

Country Status (1)

Country Link
ES (1) ES75998A1 (en)

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