Patent US3271706A successfully refreshed from Google Patents.
US3271706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave filter
Assignee: General Electric Co
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Filing: 1964-12-07
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Granted: 1966-09-06
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Expires: 1984-12-07
Abstract
No abstract record available.
Inventors
- 👤 John P Rooney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:32
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/20; H01P1/207; H01P1/211
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A MICROWAVE FILTER SYSTEM COMPRISING: A PLURALITY OF WAFFLE-IRON FILTER SECTIONS FOR PREVENTING PASSAGE OF PREDETERMINED ELECTROMAGNETIC WAVES, SAID FILTER SECTIONS HAVING THE CHARACTERISTIC OF GIVING RISE OF SPURIOUS RESPONSES; AND MEANS FOR SUPPRESSING SAID SPURIOUS RESPONSES COMPRISING ELECTROMAGNETIC WAVE TRANSMISSION MEANS CONNECTING SAID FILTER SECTIONS, SAID MEANS BEING DESIGNED TO PREVENT TRANSMISSION OF SAID SPURIOUS RESPONSES.
Claim 2
Dependent Claim
57 words
A MICROWAVE FILTER SYSTEM COMPRISING: A PLURALITY OF WAFFLE-IRON FILTER SECTIONS FOR PREVENTING PASSAGE OF PREDETERMINED ELECTROMAGNETIC WAVES, SAID FILTER SECTIONS HAVING THE CHARACTERISTIC OF GIVING RISE OF SPURIOUS RESPONSES; AND MEANS FOR SUPPRESSING SAID SPURIOUS RESPONSES COMPRISING ELECTROMAGNETIC WAVE TRANSMISSION MEANS CONNECTING SAID FILTER SECTIONS, SAID MEANS BEING DESIGNED TO PREVENT TRANSMISSION OF SAID SPURIOUS RESPONSES.
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) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |