US2666575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Calculating device
Assignee: General Electric Co
•
Filing: 1949-10-26
•
Granted: 1954-01-19
•
Expires: 1969-10-26
Abstract
No abstract record available.
Inventors
- 👤 Robert A Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:02
CPC Classifications
G; G11; G11C; G11C19/00; G11C19/20; G11C19/202
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2192812A
Cited
US2409689A
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US2386481A
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US2404047A
Cited
US2445215A
Cited
US2435840A
Cited
US2435841A
Cited
US2604262A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-18 | 1957-07-20 | 1958-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-18 | 1961-07-20 | 1962-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-18 | 1965-07-20 | 1966-01-19 | $7700.00 | Window Closed / Lapsed |