CH273421A - Macchina da scrivere con dispositivo per segnalare la fine della pagina. - Google Patents
Macchina da scrivere con dispositivo per segnalare la fine della pagina.Info
- Publication number
- CH273421A CH273421A CH273421DA CH273421A CH 273421 A CH273421 A CH 273421A CH 273421D A CH273421D A CH 273421DA CH 273421 A CH273421 A CH 273421A
- Authority
- CH
- Switzerland
- Prior art keywords
- typewriter
- page
- signal
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D9/00—Bookmarkers; Spot indicators; Devices for holding books open; Leaf turners
- B42D9/04—Leaf turners
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/02—Viewing or reading apparatus
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH273421T | 1949-05-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH273421A true CH273421A (it) | 1951-02-15 |
Family
ID=4479254
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH273421D CH273421A (it) | 1949-05-09 | 1949-05-09 | Macchina da scrivere con dispositivo per segnalare la fine della pagina. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH273421A (it) |
-
1949
- 1949-05-09 CH CH273421D patent/CH273421A/it unknown
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