Patent US2203945A successfully refreshed from Google Patents.
US2203945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio antenna
Assignee: Motors Liquidation Co
•
Filing: 1937-10-20
•
Granted: 1940-06-11
•
Expires: 1957-10-20
Abstract
No abstract record available.
Inventors
- 👤 Roo William C De
- 👤 Bertram A Schwarz
- 👤 Agramonte Jules
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:46
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/27; H01Q1/32; H01Q1/325; H01Q1/3275; H01Q1/12; H01Q1/1207; H01Q1/1214; Y; Y10; Y10T; Y10T403/00; Y10T403/55
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) | 1943-06-11 | 1943-12-11 | 1944-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-06-11 | 1947-12-11 | 1948-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-06-11 | 1951-12-11 | 1952-06-11 | $7700.00 | Window Closed / Lapsed |