BE578169A
(en )
1959-08-17
Graphic instruments
CH388481A
(en )
1965-02-28
Magnetizable thin film
GR18775B
(en )
1958-06-09
STUDY NOTEBOOKS OF MATHEMATICS AND GEOGRAPHY WITH CREATED AND WHITE SURFACE.
AT249743B
(en )
1966-10-10
Arrangement for the transmission of commands or information
GR18703B
(en )
1958-05-07
STANDARD CONSTRUCTION OF JAVES AND DOCKS.
GR17536B
(en )
1957-02-05
IMPROVEMENT OF Topographic and relief maps.
BE598618A
(en )
1961-04-14
Form learning board for viewing and direct derivation of surface formulas.
FR1263264A
(en )
1961-06-09
Improvements to the representation of relief on maps and plans
GR17296B
(en )
1956-11-10
PAINTING AND COPYING NOTEBOOK.
GR19080B
(en )
1958-09-25
SPECIAL TABLE AND ZATRIKI TABLE.
GR18888B
(en )
1958-07-16
STABLE AND UNDERWATER SHIP.
GR20514B
(en )
1960-02-10
INDEPENDENT PIC-AP NEEDLE BASE AND SIMPLE AND DOUBLE PIC-AP NEEDLE.
FR1242790A
(en )
1960-09-30
Double push-pull modulator
FR1250439A
(en )
1961-01-13
Graphic instruments
GR21315B
(en )
1960-10-25
SYMBOLIC AND GRADUAL REPRESENTATION OF NUMBERS BY TEACHING MATHEMATICS IN SCHOOLS.
ES50472Y
(en )
1956-08-01
Letters and signs
GR17375B
(en )
1956-12-04
TEXTBOOKS OF ALTERNATIVE COPY AND PAINTING SHEETS.
GR14975B
(en )
1954-01-14
CRUSHED OF PURE AND PURE OIL AND GASOLINE.
ES56458Y
(en )
1957-09-01
Instructional and pedagogical book
GR19149B
(en )
1958-10-16
POLYGRAPHY MEMBRANE FOR MINUTE AND SHEET MAP COPY.
ES51372Y
(en )
1956-11-16
Book with text and / or drawings and coupons
GR20954B
(en )
1960-06-15
ARRANGEMENT OF ASSEMBLERS AND MOBILE SHELVES - SHELVES.
GR16409B
(en )
1955-08-02
ADVERTISING AND TOURIST CORRESPONDENCE FOLDER.
GR17818B
(en )
1957-05-15
VERY SIMPLE CONSTRUCTION (IN RESPECT OF CONSTRUCTION AND ASSEMBLY) OF PRECAUTIVE ACCOMMODATION.
ES45586Y
(en )
1955-06-16
Book with stickers and the like