US2617033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frame antenna
Assignee: Hartford National Bank and Trust Co
•
Filing: 1948-01-16
•
Granted: 1952-11-04
•
Expires: 1968-01-16
Abstract
No abstract record available.
Inventors
- 👤 Posthumus Klaas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:23
CPC Classifications
H; H01; H01Q; H01Q7/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE388072C
Cited
FR620848A
Cited
US2166750A
Cited
GB519350A
Cited
CH233309A
Cited
US2256472A
Cited
US2284131A
Cited
US2405123A
Cited
US2457127A
Cited
US2480117A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-04 | 1956-05-05 | 1956-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-04 | 1960-05-05 | 1960-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-04 | 1964-05-05 | 1964-11-04 | $7700.00 | Window Closed / Lapsed |