FR391672A - Traveler pocket indicator - Google Patents
Traveler pocket indicatorInfo
- Publication number
- FR391672A FR391672A FR391672DA FR391672A FR 391672 A FR391672 A FR 391672A FR 391672D A FR391672D A FR 391672DA FR 391672 A FR391672 A FR 391672A
- Authority
- FR
- France
- Prior art keywords
- traveler
- indicator
- pocket indicator
- traveler pocket
- 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
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09D—RAILWAY OR LIKE TIME OR FARE TABLES; PERPETUAL CALENDARS
- G09D1/00—Railway or like time or fare tables; Indicating or reading aids therefor
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/26—Sound-focusing or directing, e.g. scanning
- G10K11/28—Sound-focusing or directing, e.g. scanning using reflection, e.g. parabolic reflectors
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE391672X | 1908-02-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR391672A true FR391672A (en) | 1908-11-06 |
Family
ID=6381206
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR391672D Expired FR391672A (en) | 1908-02-20 | 1908-06-04 | Traveler pocket indicator |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR391672A (en) |
GB (1) | GB391672A (en) |
-
1908
- 1908-06-04 FR FR391672D patent/FR391672A/en not_active Expired
-
1932
- 1932-09-16 GB GB25811/32A patent/GB391672A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB391672A (en) | 1933-05-04 |
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