US3430255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron beam thermoplastic recorder with conductor coated thermoplastic recording medium
Assignee: Ampex Corp
•
Filing: 1964-11-02
•
Granted: 1969-02-25
•
Expires: 1984-11-02
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Everhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:48
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2896507A
Cited
US2748288A
Cited
US3113179A
Cited
US3137762A
Cited
US3168726A
Cited
US3239840A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |