Patent US2200076A successfully refreshed from Google Patents.
US2200076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bank of switch keys
Assignee: RCA Corp
•
Filing: 1938-12-30
•
Granted: 1940-05-07
•
Expires: 1958-12-30
Abstract
No abstract record available.
Inventors
- 👤 Donald T Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:00
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/70; H01H13/72; H03; H03J; H03J5/00; H03J5/02; H03J5/04; H03J5/12; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20207; Y10T74/20238; Y10T74/20244
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1943-05-07 | 1943-11-06 | 1944-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-05-07 | 1947-11-06 | 1948-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-05-07 | 1951-11-06 | 1952-05-07 | $7700.00 | Window Closed / Lapsed |