Patent US2718254A successfully refreshed from Google Patents.
Patent US2244369A successfully refreshed from Google Patents.
US2244369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical measuring and calculating device
Assignee: RCA Corp
•
Filing: 1938-10-31
•
Granted: 1941-06-03
•
Expires: 1958-10-31
Abstract
No abstract record available.
Inventors
- 👤 Martin Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:41
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/24; G01; G01R; G01R27/00; G01R27/02; G01R27/08; G01R27/10; G01R27/12
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) | 1944-06-02 | 1944-12-02 | 1945-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-06-02 | 1948-12-02 | 1949-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-06-02 | 1952-12-02 | 1953-06-03 | $7700.00 | Window Closed / Lapsed |