US2796597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switching system
Assignee: RCA Corp
•
Filing: 1955-07-15
•
Granted: 1957-06-18
•
Expires: 1975-07-15
Abstract
No abstract record available.
Inventors
- 👤 Glen E Poorte
- 👤 David L Nettleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:39
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/54; G11B5/55; G11B5/5521; G11B5/5526; G11B5/553; G11B5/5547; G11B15/00; G11B15/02; G11B5/012; G11B5/02; G11B5/09; G11B2220/00; G11B2220/20; G11B2220/90; G11B2220/91; G11B2220/913
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2617704A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-17 | 1960-12-17 | 1961-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-17 | 1964-12-17 | 1965-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-17 | 1968-12-17 | 1969-06-18 | $7700.00 | Window Closed / Lapsed |