GB190816028A - Improvements in Appliances for use with Telephone Transmitters for Preventing the Overhearing of Telephone Conversations.
- Google Patents
Improvements in Appliances for use with Telephone Transmitters for Preventing the Overhearing of Telephone Conversations.
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
Inventor
Edward Francis Hutton
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.)
Individual
Original Assignee
Individual
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 IndividualfiledCriticalIndividual
Application grantedgrantedCritical
Publication of GB190816028ApublicationCriticalpatent/GB190816028A/en
16,028. Hutton, E. F. July 28. Drawings to Specification. Sound-deadening coverings &c.-A sound-absorbing lining for a telephone casing consists of two thick sheets of felt separated by a lining of thin sheet rubber, leather, &c.
GB190816028D1908-07-281908-07-28Improvements in Appliances for use with Telephone Transmitters for Preventing the Overhearing of Telephone Conversations.
ExpiredGB190816028A
(en)