US2072272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio receiving system
Assignee: RCA Corp
•
Filing: 1932-03-04
•
Granted: 1937-03-02
•
Expires: 1952-03-04
Abstract
No abstract record available.
Inventors
- 👤 Harry J Nichols
- 👤 Henry C Forbes
- 👤 Walter S Harmon
- 👤 Homer J Loftis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:07
CPC Classifications
H; H03; H03J; H03J9/00; H03J9/002
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) | 1940-03-01 | 1940-08-31 | 1941-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-03-01 | 1944-08-31 | 1945-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-03-01 | 1948-08-31 | 1949-03-02 | $7700.00 | Window Closed / Lapsed |