US2621293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Television antenna
Assignee: I ROSENTHAL
•
Filing: 1952-04-11
•
Granted: 1952-12-09
•
Expires: 1972-04-11
Abstract
No abstract record available.
Inventors
- 👤 Hills Elmer Guy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:23
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1863518A
Cited
US2093886A
Cited
US2168857A
Cited
US2259628A
Cited
US2422026A
Cited
GB666266A
Cited
US2582159A
Cited
US2532138A
Cited
US2558487A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-09 | 1956-06-09 | 1956-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-09 | 1960-06-09 | 1960-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-09 | 1964-06-09 | 1964-12-09 | $7700.00 | Window Closed / Lapsed |