ES41676A1 -
Improvements in telephone devices and panels for telephone communications and in the way of supplying electrical current to them.
- Google Patents
Improvements in telephone devices and panels for telephone communications and in the way of supplying electrical current to them.
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.)
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.)
Alfred Graham & Co
Original Assignee
Alfred Graham & Co
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 Alfred Graham & CofiledCriticalAlfred Graham & Co
Priority to ES41676ApriorityCriticalpatent/ES41676A1/en
Publication of ES41676A1publicationCriticalpatent/ES41676A1/en
ES41676A1907-09-271907-09-27
Improvements in telephone devices and panels for telephone communications and in the way of supplying electrical current to them.
ExpiredES41676A1
(en)