NL78443C - - Google Patents
Info
- Publication number
- NL78443C NL78443C NL78443DA NL78443C NL 78443 C NL78443 C NL 78443C NL 78443D A NL78443D A NL 78443DA NL 78443 C NL78443 C NL 78443C
- 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
- G11B5/127—Structure or manufacture of heads, e.g. inductive
-
- 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
- G11B5/265—Structure or manufacture of a head with more than one gap for erasing, recording or reproducing on the same track
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US139759A US2594934A (en) | 1950-01-20 | 1950-01-20 | Erasing head for magnetic record members |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL78443C true NL78443C (de) |
Family
ID=22488158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL78443D NL78443C (de) | 1950-01-20 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2594934A (de) |
| GB (1) | GB678341A (de) |
| NL (1) | NL78443C (de) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1068907B (de) * | 1959-11-12 | Aurigeno Ticino Giovanni Steinegger, (Schweiz) | Löscheinrichtung für magnetisierbare Drähte | |
| US2688053A (en) * | 1950-11-09 | 1954-08-31 | Ampro Corp | Erasing magnet mounting and assembly |
| US2711445A (en) * | 1951-03-27 | 1955-06-21 | Steinegger Giovanni | Sound recording and reproducing device |
| US2767254A (en) * | 1951-09-28 | 1956-10-16 | Rca Corp | Magnetic recording |
| US2951127A (en) * | 1955-02-24 | 1960-08-30 | Kane Corp Du | Magnetic recording and reproducing machine |
| US3024320A (en) * | 1958-06-20 | 1962-03-06 | James A Fraser | Dictating machine erasure unit |
| US2997866A (en) * | 1960-05-23 | 1961-08-29 | Ashe | Magnetic latch opener and demagnetizer |
| US3243784A (en) * | 1960-09-29 | 1966-03-29 | Litton Systems Inc | Microwave process and apparatus |
| US3137003A (en) * | 1960-12-05 | 1964-06-09 | Litton Systems Inc | Microwave process and apparatus |
| US3373250A (en) * | 1964-04-06 | 1968-03-12 | Clarence H. Adams | Hand held multi-channel magnetic tape eraser |
| FR1543795A (fr) * | 1966-12-30 | Ibm | Appareil de reproduction magnétique | |
| US3610838A (en) * | 1968-03-11 | 1971-10-05 | Sony Corp | Erasing apparatus for magnetic memory discs using two dc heads |
| US3665513A (en) * | 1969-12-29 | 1972-05-23 | Ibm | Passive magnetic transfer of discrete magnetic information |
| US3699267A (en) * | 1970-03-18 | 1972-10-17 | Du Pont | Apparatus for copying magnetic tapes |
| JPS549044B1 (de) * | 1970-05-21 | 1979-04-20 | ||
| US3947891A (en) * | 1973-10-02 | 1976-03-30 | Sony Corporation | Static magnetic erasing head |
| JPS531646B2 (de) * | 1973-10-02 | 1978-01-20 | ||
| GB1575680A (en) * | 1976-11-16 | 1980-09-24 | Tokyo Shibaura Electric Co | Tape recording apparatus including a multipolar erasing head and a manufacturing method for a multipolar erasing head |
| US4613919A (en) * | 1981-12-15 | 1986-09-23 | Matsushita Electric Industrial Co., Ltd. | Magnetic erasing head |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US949351A (en) * | 1907-08-08 | 1910-02-15 | H M Cosh | Electromagnetic ironing-board. |
| DE322252C (de) * | 1914-01-03 | 1920-06-24 | Ernest Wilson | Verfahren zum Erhoehen der Empfindlichkeit besonders von solchen magnetischen Instrumenten und Apparaten, deren Wirkung von der Permeabilitaet von weichem Eisen oder aehnlichem magnetischen Material abhaengt |
| US1863308A (en) * | 1928-06-12 | 1932-06-14 | Bell Telephone Labor Inc | Receiver |
-
0
- NL NL78443D patent/NL78443C/xx active
-
1950
- 1950-01-20 US US139759A patent/US2594934A/en not_active Expired - Lifetime
- 1950-09-05 GB GB21889/50A patent/GB678341A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2594934A (en) | 1952-04-29 |
| GB678341A (en) | 1952-09-03 |