DK107844C - Addition machine with reduced keyboard. - Google Patents

Addition machine with reduced keyboard.

Info

Publication number: DK107844C
Authority: DK; Denmark
Prior art keywords: reduced keyboard; addition machine; machine; addition; keyboard
Prior art date: 1962-09-25

Application number

DK449563AA

Other languages

Danish (da)

Original Assignee

Ricoh Kk

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.)

1962-09-25

Filing date

1963-09-24

Publication date

1967-07-10

1963-09-24 Application filed by Ricoh Kk filed Critical Ricoh Kk

1967-07-10 Application granted granted Critical

1967-07-10 Publication of DK107844C publication Critical patent/DK107844C/en

Classifications

- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06C—DIGITAL COMPUTERS IN WHICH ALL THE COMPUTATION IS EFFECTED MECHANICALLY
- G06C7/00—Input mechanisms
- G06C7/02—Keyboards
- G06C7/08—Keyboards with one set of keys for all denominations, e.g. ten-key board

Landscapes

Engineering & Computer Science (AREA)
Physics & Mathematics (AREA)
Computer Hardware Design (AREA)
Computing Systems (AREA)
General Physics & Mathematics (AREA)
Theoretical Computer Science (AREA)
Character Spaces And Line Spaces In Printers (AREA)

DK449563AA 1962-09-25 1963-09-24 Addition machine with reduced keyboard. DK107844C (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
IT1900562		1962-09-25

Publications (1)

Publication Number	Publication Date
DK107844C true DK107844C (en)	1967-07-10

Family

ID=11153772

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DK449563AA DK107844C (en)	1962-09-25	1963-09-24	Addition machine with reduced keyboard.

Country Status (5)

Country	Link
CH (1)	CH431141A (en)
DK (1)	DK107844C (en)
FR (1)	FR1520367A (en)
GB (1)	GB1055977A (en)
NL (1)	NL145973B (en)

1963
- 1963-09-23 CH CH1169963A patent/CH431141A/en unknown
- 1963-09-24 GB GB37624/63A patent/GB1055977A/en not_active Expired
- 1963-09-24 DK DK449563AA patent/DK107844C/en active
- 1963-09-24 NL NL63298283A patent/NL145973B/en unknown
- 1963-09-24 FR FR948459A patent/FR1520367A/en not_active Expired

Also Published As

Publication number	Publication date
GB1055977A (en)	1967-01-25
CH431141A (en)	1967-02-28
FR1520367A (en)	1968-04-12
NL145973B (en)	1975-05-15

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