US3499215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capacitive fixed memory system
Assignee: General Electric Co
•
Filing: 1967-05-05
•
Granted: 1970-03-10
•
Expires: 1987-05-05
Abstract
No abstract record available.
Inventors
- 👤 Harry D Fetterolf
- 👤 Beuford E Tindal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:20
CPC Classifications
G; G11; G11C; G11C17/00; G11C17/04; Y; Y10; Y10T; Y10T29/00; Y10T29/43; Y10T29/435; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49069
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US920614A
Cited
US3042591A
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US3226802A
Cited
US3142112A
Cited
US3191098A
Cited
US3293353A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |