US3464035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter coupled to microwave guide
Assignee: GERALD W VAN KOL
•
Filing: 1966-07-25
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Granted: 1969-08-26
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Expires: 1986-07-25
Abstract
No abstract record available.
Inventors
- 👤 Gerald W Van Kol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:02
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/16; H01P1/162
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-25 | 1973-02-24 | 1973-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-25 | 1977-02-24 | 1977-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-25 | 1981-02-24 | 1981-08-26 | $7700.00 | Window Closed / Lapsed |