USPatentGranted
S

Demagnetizing device

Granted 20 Apr 1982 · no office action yet

Current assignee: Tdk Electronics · originally TDK Corporation

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Inventors: Keiichi Yoshizawa · Examiner: Alan P. Douglas · AU 291 · TC 2900

Application
Not granted yet
filed 10 Jan 1979
Publication
Not published
not published
Patent· this page
US D263952
granted 20 Apr 1982

Life of the patent

2 dated events
⤢ drag to zoomJan 1979Jul 1979Jan 1980Jul 1980Jan 1981Jul 1981Jan 1982Jul 1982Prosecution
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Description

1 parts
›FIG. 1 is a front view of the…

FIG. 1 is a front view of the demagnetizing device according to the present invention, which is used for demagnetizing the remnant magnetization of a magnetic recording and reproducing head of a recorder;

FIG. 2 is a right side view of the demagnetizing device;

FIG. 3 is a left side view of the demagnetizing device;

FIG. 4 is a rear view of the demagnetizing device;

FIG. 5 is a plan view of the demagnetizing device;

FIG. 6 is a bottom view of the demagnetizing device; and

FIG. 7 is a left side view of the demagnetizing device which shows that the magnetic field generating head is movable with respect to the housing portion.

the grant prints no section headings; every part label below is ours, taken from that part's own first words

Claims

1 · 1 independent · depth 1
1 granted claims

Classifications

2 codes
USPC · US Patent Classification
D13/99D08/61

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File wrapper

Pendency
3.3 y
1,196 days filing → grant
Office actions
0
on the grant's record
Examiner
Alan P. Douglas
art unit 291 · TC 2900
Citations: 1 back · 0 forward

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