US3017633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linearly polarized spiral antenna system and feed system therefor
Assignee: Individual
•
Filing: 1959-11-30
•
Granted: 1962-01-16
•
Expires: 1979-11-30
Abstract
No abstract record available.
Inventors
- 👤 Arthur E Marston
- 👤 Henri P Coleman
- 👤 Jr Julius A Kaiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:59
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q9/04; H01Q9/16; H01Q9/26; H01Q9/27
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2863145A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-15 | 1965-07-17 | 1966-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-15 | 1969-07-17 | 1970-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-15 | 1973-07-17 | 1974-01-16 | $7700.00 | Window Closed / Lapsed |