US3550099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Data-storage apparatus
Assignee: Siemens AG
•
Filing: 1967-08-23
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Granted: 1970-12-22
•
Expires: 1987-08-23
Abstract
No abstract record available.
Inventors
- 👤 Karl-Ulrich Stein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:00
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/02; G11C11/06; G11C11/06007
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2776411A
Cited
US2825892A
Cited
GB851814A
Cited
US3325791A
Cited
US3397394A
Cited
US3402401A
Cited
US3484761A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |