US2520984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antenna system
Assignee: Motorola Solutions Inc
•
Filing: 1947-01-25
•
Granted: 1950-09-05
•
Expires: 1967-01-25
Abstract
No abstract record available.
Inventors
- 👤 Fred B Williams
- 👤 Fred P Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:00
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/27; H01Q1/32; H01Q1/325; H01Q1/3291; H03; H03H; H03H2/00; H03H2/005; H03H2/008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE604353C
Cited
US1723907A
Cited
US1997271A
Cited
US2129852A
Cited
US2267266A
Cited
US2182484A
Cited
US2329634A
Cited
US2353111A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-04 | 1954-03-06 | 1954-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-04 | 1958-03-06 | 1958-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-04 | 1962-03-06 | 1962-09-05 | $7700.00 | Window Closed / Lapsed |