Patent US5139610A successfully refreshed from Google Patents.
Patent US2797413A successfully refreshed from Google Patents.
US2797413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extensible and retractable radio antenna
Assignee: Casco Products Corp
•
Filing: 1951-05-18
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Granted: 1957-06-25
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Expires: 1971-05-18
Abstract
No abstract record available.
Inventors
- 👤 Joseph H Cone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:58
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/08; H01Q1/10; H01Q1/103
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-24 | 1960-12-24 | 1961-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-24 | 1964-12-24 | 1965-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-24 | 1968-12-24 | 1969-06-25 | $7700.00 | Window Closed / Lapsed |