US2890345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of converting magnetic recordings to visual images by use of radioactive magnetic materials
Assignee: Gulf Research and Development Co
•
Filing: 1956-03-06
•
Granted: 1959-06-09
•
Expires: 1976-03-06
Abstract
No abstract record available.
Inventors
- 👤 Muffly Gary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:41
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/74; G11B11/00; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
THE METHOD OF REPRODUCING COPIES OF A MAGNETIC RECORD WHICH COMPRISES ADHERING TO THE MAGNETIC PORTIONS OF SAID RECORD A RADIOACTIVE MAGNETIC MATERIAL, THEN EXPOSING A PHOTOSENSITIVE EMULSION TO SAID RECORD, AND DEVELOPING THE RESULTING PRINT.
Claim 2
Independent Claim
36 words
THE METHOD OF REPRODUCING COPIES OF A MAGNETIC RECORD WHICH COMPRISES ADHERING TO THE MAGNETIC PORTIONS OF SAID RECORD A RADIOACTIVE MAGNETIC MATERIAL, THEN EXPOSING A PHOTOSENSITIVE EMULSION TO SAID RECORD, AND DEVELOPING THE RESULTING PRINT.
References Cited (Backward Citations)
US1815010A
Cited
US2699408A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-08 | 1962-12-08 | 1963-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-08 | 1966-12-08 | 1967-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-08 | 1970-12-08 | 1971-06-09 | $7700.00 | Window Closed / Lapsed |