US3530441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for storing and retrieving information
Assignee: Energy Conversion Devices Inc
•
Filing: 1969-01-15
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Granted: 1970-09-22
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Expires: 1989-01-15
Abstract
No abstract record available.
Inventors
- 👤 Stanford R Ovshinsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:54
CPC Classifications
G; G03; G03G; G03G17/00; G03C; G03C1/00; G03C1/705; G06; G06K; G06K1/00; G06K1/12; G06K1/128; G11; G11C; G11C13/00; G11C13/04; G11C13/048; H; H10; H10N; H10N70/00; H10N70/20; H10N70/231; H10N70/257; H10N70/801; H10N70/821; H10N70/826; H10N70/881; H10N70/882; H10N70/8825; H10N70/8828; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-21 | 1974-03-23 | 1974-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-21 | 1978-03-23 | 1978-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-21 | 1982-03-23 | 1982-09-22 | $7700.00 | Window Closed / Lapsed |