Patent US2875441A successfully refreshed from Google Patents.
US2875441A
Expired / Lapsed
US
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Twin multiple loop television antenna
Assignee: Individual
•
Filing: 1954-10-14
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Granted: 1959-02-24
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Expires: 1974-10-14
Abstract
No abstract record available.
Inventors
- 👤 James A Mcgrane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:24
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q9/04; H01Q9/16; H01Q9/26; H01Q9/265
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US31953A
Cited
US918255A
Cited
US1812695A
Cited
US2046473A
Cited
US2045987A
Cited
CH244731A
Cited
DE825433C
Cited
US2699348A
Cited
US2780808A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |