US2556460A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mast or antenna supporting device
Assignee: Individual
•
Filing: 1950-02-02
•
Granted: 1951-06-12
•
Expires: 1970-02-02
Abstract
No abstract record available.
Inventors
- 👤 Richard J Ballam
- 👤 Viljo W Friberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:39
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/12; H01Q1/1242
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1544656A
Cited
GB258680A
Cited
US1722352A
Cited
US1672625A
Cited
US1680050A
Cited
US2357165A
Cited
US2439062A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-11 | 1954-12-11 | 1955-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-11 | 1958-12-11 | 1959-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-11 | 1962-12-11 | 1963-06-12 | $7700.00 | Window Closed / Lapsed |