US2785390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hysteretic devices
Assignee: RCA Corp
•
Filing: 1955-04-28
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Granted: 1957-03-12
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Expires: 1975-04-28
Abstract
No abstract record available.
Inventors
- 👤 Jan A Rajchman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:56
CPC Classifications
H; H03; H03K; H03K23/00; H03K23/74; G; G11; G11C; G11C19/00; G11C19/005; G11C19/02; G11C19/04; H03K23/76
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-11 | 1960-09-10 | 1961-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-11 | 1964-09-10 | 1965-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-11 | 1968-09-10 | 1969-03-12 | $7700.00 | Window Closed / Lapsed |