NL249143A - - Google Patents
Info
- Publication number
- NL249143A NL249143A NL249143DA NL249143A NL 249143 A NL249143 A NL 249143A NL 249143D A NL249143D A NL 249143DA NL 249143 A NL249143 A NL 249143A
- Authority
- NL
- Netherlands
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/004—Recording on, or reproducing or erasing from, magnetic drums
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US798548A US3103650A (en) | 1959-03-10 | 1959-03-10 | Switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL249143A true NL249143A (es) |
Family
ID=25173680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL249143D NL249143A (es) | 1959-03-10 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3103650A (es) |
| CH (1) | CH387699A (es) |
| DE (1) | DE1115492B (es) |
| GB (1) | GB916883A (es) |
| NL (1) | NL249143A (es) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3882473A (en) * | 1970-03-18 | 1975-05-06 | Ibm | Magnetic disk storage file |
| US4003089A (en) * | 1974-12-31 | 1977-01-11 | Motorola, Inc. | Electronic channel selecting system for a quad-stereo tape player |
| US5422761A (en) * | 1992-11-20 | 1995-06-06 | International Business Machines Corporation | Disk drive with redundant recording |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2680239A (en) * | 1952-02-26 | 1954-06-01 | Engineering Res Associates Inc | Data selection system |
| US2813261A (en) * | 1954-01-04 | 1957-11-12 | Monroe Calculating Machine | Playback circuit |
| US2866179A (en) * | 1955-12-23 | 1958-12-23 | Ibm | Record selector |
| US2907009A (en) * | 1956-07-05 | 1959-09-29 | Ibm | Magnetic head commutator |
-
0
- NL NL249143D patent/NL249143A/xx unknown
-
1959
- 1959-03-10 US US798548A patent/US3103650A/en not_active Expired - Lifetime
-
1960
- 1960-02-23 GB GB6394/60A patent/GB916883A/en not_active Expired
- 1960-03-02 DE DES67377A patent/DE1115492B/de active Pending
- 1960-03-10 CH CH274360A patent/CH387699A/de unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE1115492B (de) | 1961-10-19 |
| GB916883A (en) | 1963-01-30 |
| CH387699A (de) | 1965-02-15 |
| US3103650A (en) | 1963-09-10 |