FR576642A - Appareil de signal - Google Patents

Appareil de signal

Info

Publication number: FR576642A
Authority: FR; France
Prior art keywords: signal device; signal
Prior art date: 1923-10-12
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

Other languages

Inventor

Roy Solt

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.)

1923-10-12

Filing date

1924-01-04

Publication date

1924-08-23

1924-01-04 Application filed filed Critical

1924-08-23 Application granted granted Critical

1924-08-23 Publication of FR576642A publication Critical patent/FR576642A/fr

Status Expired legal-status Critical Current

Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L29/00—Safety means for rail/road crossing traffic
- B61L29/24—Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)

FR576642D 1923-10-12 1924-01-04 Appareil de signal Expired FR576642A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US576642XA	1923-10-12	1923-10-12

Publications (1)

Publication Number	Publication Date
FR576642A true FR576642A (fr)	1924-08-23

Family

ID=22011998

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR576642D Expired FR576642A (fr)	1923-10-12	1924-01-04	Appareil de signal

Country Status (1)

Country	Link
FR (1)	FR576642A (fr)

1924
- 1924-01-04 FR FR576642D patent/FR576642A/fr not_active Expired

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