Patent US3905425A successfully refreshed from Google Patents.
Patent US3172089A successfully refreshed from Google Patents.
US3172089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thin film magnetic device
Assignee: Raytheon Co
•
Filing: 1962-06-25
•
Granted: 1965-03-02
•
Expires: 1982-06-25
Abstract
No abstract record available.
Inventors
- 👤 Kent D Broadbent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:54
CPC Classifications
G; G11; G11C; G11C19/00; G11C19/02; G11C19/08; G11C19/0875; G11C19/0883
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A MAGNETIC DEVICE, COMPRISING: A MAGNETIC MEDIUM HAVING AN INITIAL STATE OF MAGNETIZATION; INPUT MEANS MAGNETICALLY COUPLED TO SAID MAGNETIC MEDIUM AT A FIRST PREDETERMINED PLACE THEREOF FOR ESTABLISHING IN SAID MAGNETIC MEDIUM A MAGNETIC DOMAIN OF A DIFFERENT STATE OF MAGNETIZATION THAN SAID INITIAL STATE OF MAGNETIZATION;
Claim 2
Dependent Claim
48 words
A MAGNETIC DEVICE, COMPRISING: A MAGNETIC MEDIUM HAVING AN INITIAL STATE OF MAGNETIZATION; INPUT MEANS MAGNETICALLY COUPLED TO SAID MAGNETIC MEDIUM AT A FIRST PREDETERMINED PLACE THEREOF FOR ESTABLISHING IN SAID MAGNETIC MEDIUM A MAGNETIC DOMAIN OF A DIFFERENT STATE OF MAGNETIZATION THAN SAID INITIAL STATE OF MAGNETIZATION;
References Cited (Backward Citations)
US3068453A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |