FR671932A - Signaling device - Google Patents
Signaling deviceInfo
- Publication number
- FR671932A FR671932A FR671932DA FR671932A FR 671932 A FR671932 A FR 671932A FR 671932D A FR671932D A FR 671932DA FR 671932 A FR671932 A FR 671932A
- Authority
- FR
- France
- Prior art keywords
- signaling device
- signaling
- 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
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F19/00—Advertising or display means not otherwise provided for
- G09F19/12—Advertising or display means not otherwise provided for using special optical effects
- G09F19/14—Advertising or display means not otherwise provided for using special optical effects displaying different signs depending upon the view-point of the observer
Landscapes
- Business, Economics & Management (AREA)
- Accounting & Taxation (AREA)
- Marketing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR671932T | 1929-03-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR671932A true FR671932A (en) | 1929-12-20 |
Family
ID=9017232
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR671932D Expired FR671932A (en) | 1929-03-22 | 1929-03-22 | Signaling device |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR671932A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6041533A (en) * | 1998-01-26 | 2000-03-28 | Lemmond, Jr.; R. Nelson | Advertising step systems |
-
1929
- 1929-03-22 FR FR671932D patent/FR671932A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6041533A (en) * | 1998-01-26 | 2000-03-28 | Lemmond, Jr.; R. Nelson | Advertising step systems |
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