FR2177993A1 - - Google Patents
Info
- Publication number
- FR2177993A1 FR2177993A1 FR7310784A FR7310784A FR2177993A1 FR 2177993 A1 FR2177993 A1 FR 2177993A1 FR 7310784 A FR7310784 A FR 7310784A FR 7310784 A FR7310784 A FR 7310784A FR 2177993 A1 FR2177993 A1 FR 2177993A1
- Authority
- FR
- France
- 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.)
- Granted
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
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/29—Structure or manufacture of unitary devices formed of plural heads for more than one track
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
- Digital Magnetic Recording (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US23848572A | 1972-03-27 | 1972-03-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2177993A1 true FR2177993A1 (en) | 1973-11-09 |
| FR2177993B1 FR2177993B1 (en) | 1976-05-21 |
Family
ID=22898103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7310784A Expired FR2177993B1 (en) | 1972-03-27 | 1973-03-26 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3789156A (en) |
| JP (1) | JPS535538B2 (en) |
| CA (1) | CA1001303A (en) |
| DE (1) | DE2315277A1 (en) |
| FR (1) | FR2177993B1 (en) |
| GB (1) | GB1413229A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5653464Y2 (en) * | 1974-09-02 | 1981-12-12 | ||
| JPS5532198Y2 (en) * | 1975-06-23 | 1980-07-31 | ||
| JPS5639728A (en) * | 1979-09-10 | 1981-04-15 | Okadohazatsuku Kk | Automatic limited feeding systematizing apparatus for breeding pig |
| US4291352A (en) * | 1980-02-27 | 1981-09-22 | Ampex Corporation | Multichannel transducer structure with improved interchannel cross talk rejection |
| JPS5964441A (en) * | 1982-09-30 | 1984-04-12 | Yamato Sewing Mach Seizo Kk | Method and device for automatic pickup of cut material in stack |
| JP2935129B2 (en) * | 1990-05-28 | 1999-08-16 | インターナショナル・ビジネス・マシーンズ・コーポレーション | Fixed magnetic disk drive and related apparatus and method |
| US5245494A (en) * | 1991-07-15 | 1993-09-14 | Hogan John W | Write-read magnetic recording head |
| US8134801B2 (en) * | 2007-03-19 | 2012-03-13 | Dimambro Bryan | Electromagnetic data storage devices |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2954547A (en) * | 1956-02-16 | 1960-09-27 | Ibm | Selector for a multiple track record of a magnetic memory system |
| GB882779A (en) * | 1959-07-29 | 1961-11-22 | Nat Res Dev | Improvements in or relating to multi-track magnetic heads |
-
1972
- 1972-03-27 US US00238485A patent/US3789156A/en not_active Expired - Lifetime
-
1973
- 1973-02-23 CA CA164,477A patent/CA1001303A/en not_active Expired
- 1973-03-22 GB GB1383573A patent/GB1413229A/en not_active Expired
- 1973-03-23 JP JP3399273A patent/JPS535538B2/ja not_active Expired
- 1973-03-26 FR FR7310784A patent/FR2177993B1/fr not_active Expired
- 1973-03-27 DE DE2315277A patent/DE2315277A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| FR2177993B1 (en) | 1976-05-21 |
| GB1413229A (en) | 1975-11-12 |
| DE2315277A1 (en) | 1973-10-18 |
| JPS499223A (en) | 1974-01-26 |
| CA1001303A (en) | 1976-12-07 |
| JPS535538B2 (en) | 1978-02-28 |
| US3789156A (en) | 1974-01-29 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |