BE375422A - - Google Patents

Info

Publication number: BE375422A
Authority: BE; Belgium

Application number

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.)

1930-03-29

Filing date

1930-12-01

Publication date

1931-01-31

1930-12-01 Application filed filed Critical

1931-01-31 Publication of BE375422A publication Critical patent/BE375422A/xx

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/141—Systems for two-way working between two video terminals, e.g. videophone

Landscapes

Engineering & Computer Science (AREA)
Multimedia (AREA)
Signal Processing (AREA)
Telephonic Communication Services (AREA)
Eye Examination Apparatus (AREA)
Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Audible And Visible Signals (AREA)
Telephone Set Structure (AREA)
Transforming Electric Information Into Light Information (AREA)

BE375422D 1930-03-29 1930-12-01 BE375422A (xx)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
US439986A US1805594A (en)	1930-03-29	1930-03-29	Communicating system
US442503A US2099115A (en)	1930-03-29	1930-04-08	Communication system

Publications (1)

Publication Number	Publication Date
BE375422A true BE375422A (xx)	1931-01-31

Family

ID=40498202

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE375422D BE375422A (xx)	1930-03-29	1930-12-01

Country Status (4)

Country	Link
US (2)	US1805594A (xx)
BE (1)	BE375422A (xx)
FR (1)	FR714881A (xx)
GB (2)	GB375422A (xx)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2510046A (en) *	1947-04-18	1950-05-30	Zenith Radio Corp	Radio-wire signaling system
BE541664A (xx) *	1954-09-30
DE3009404A1 (de) *	1980-03-12	1981-09-17	Philips Patentverwaltung Gmbh, 2000 Hamburg	Vorrichtung zum einstellen eines bewegbaren elektroakutischen schallwandlers
US4845636A (en) *	1986-10-17	1989-07-04	Walker Mark E	Remote transaction system
US5202957A (en) *	1990-08-09	1993-04-13	Future Communications	Full motion video telephone system
US20020087413A1 (en) *	2000-09-08	2002-07-04	Agent Ai, Inc.	Vending machine adapted to vend age-restricted items

1930
- 1930-03-29 US US439986A patent/US1805594A/en not_active Expired - Lifetime
- 1930-04-08 US US442503A patent/US2099115A/en not_active Expired - Lifetime
- 1930-12-01 BE BE375422D patent/BE375422A/xx unknown
1931
- 1931-03-27 GB GB9425/31A patent/GB375422A/en not_active Expired
- 1931-03-28 GB GB9470/31A patent/GB375785A/en not_active Expired
- 1931-03-28 FR FR714881D patent/FR714881A/fr not_active Expired

Also Published As

Publication number	Publication date
US2099115A (en)	1937-11-16
GB375422A (en)	1932-06-27
US1805594A (en)	1931-05-19
GB375785A (en)	1932-06-28
FR714881A (fr)	1931-11-30

Publication	Publication Date	Title
FR701324A (xx)	1931-03-14
FR697633A (xx)	1931-01-20
FR674023A (xx)	1930-02-24
FR702037A (xx)	1931-04-27
FR674015A (xx)	1930-02-24
FR685228A (xx)	1930-07-18
FR684934A (xx)	1930-07-17
FR677860A (xx)	1930-03-15
FR677308A (xx)	1930-03-06
FR674116A (xx)	1930-02-28
FR686653A (xx)	1930-09-02
FR687437A (xx)	1930-09-11
FR674017A (xx)	1930-02-24
FR674025A (xx)	1930-02-24
FR673480A (xx)	1930-01-17
FR706142A (xx)	1931-06-19
FR680904A (xx)	1930-05-07
BE376423A (xx)
NL35820C (xx)
BE368906A (xx)
NL30090C (xx)
BE380546A (xx)	1931-07-31
NL29317C (xx)
BE380882A (xx)
NL26740C (xx)