US3500419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual frequency,dual polarized cassegrain antenna
Assignee: TECHNICAL APPLIANCE CORP
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Filing: 1966-09-09
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Granted: 1970-03-10
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Expires: 1986-09-09
Abstract
No abstract record available.
Inventors
- 👤 Robert T Leitner
- 👤 Paul D Palmer
- 👤 George B Sleeper Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:05
CPC Classifications
H; H01; H01Q; H01Q19/00; H01Q19/10; H01Q19/18; H01Q19/19; H01Q19/193; H01Q13/00; H01Q13/02; H01Q13/025; H01Q13/0258; H01Q5/00; H01Q5/40; H01Q5/45
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR898352A
Cited
US3133284A
Cited
US3195137A
Cited
US3332083A
Cited
US3268902A
Cited
US3276022A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |