US3227975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fixed coaxial line attenuator with dielectric-mounted resistive film
Assignee: HP Inc
•
Filing: 1964-08-31
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Granted: 1966-01-04
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Expires: 1984-08-31
Abstract
No abstract record available.
Inventors
- 👤 William R Hewlett
- 👤 William B Wholey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:13
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/22; H01P1/225
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
IN AN ELECTROMAGNETIC WAVE ENERGY TRANSMISSION PATH INCLUDING OUTER AND INNER CONDUCTORS, A DIELECTRIC MEMBER SUPPORTED WITHIN SAID OUTER CONDUCTOR, A FLAT REGION OF RESISTIVE MATERIAL SUPPORTED ON SAID DIELECTRIC MEMBER, A FIRST PAIR OF ELECTRODES SPACED A FIRST PREDETERMINED DISTANCE APART ON SAID DIELECTRIC MEMBER CONNECTING SAID OUTER CONDUCTOR AND TWO OPPOSITE BOUNDARIES OF SAID FLAT RESISTIVE REGION ALONG THE FULL LENGTH THEREOF, AND A SECOND PAIR OF ELECTRODES SPACED A SECOND PREDETERMINED DISTANCE APART ON SAID DIELECTRIC MEMBER CONNECTIN SAID INNER CONDUCTOR AND TWO REMAINING BOUNDARIES OF SAID FLAT RESISTIVE REGION ALONG A CENTRAL PORTION THEREOF, THE WIDTH OF SAID CENTRAL PORTION BEARING A FIXED RELATION TO SAID FIRST PREDETERMINED DISTANCE.
Claim 2
Dependent Claim
113 words
IN AN ELECTROMAGNETIC WAVE ENERGY TRANSMISSION PATH INCLUDING OUTER AND INNER CONDUCTORS, A DIELECTRIC MEMBER SUPPORTED WITHIN SAID OUTER CONDUCTOR, A FLAT REGION OF RESISTIVE MATERIAL SUPPORTED ON SAID DIELECTRIC MEMBER, A FIRST PAIR OF ELECTRODES SPACED A FIRST PREDETERMINED DISTANCE APART ON SAID DIELECTRIC MEMBER CONNECTING SAID OUTER CONDUCTOR AND TWO OPPOSITE BOUNDARIES OF SAID FLAT RESISTIVE REGION ALONG THE FULL LENGTH THEREOF, AND A SECOND PAIR OF ELECTRODES SPACED A SECOND PREDETERMINED DISTANCE APART ON SAID DIELECTRIC MEMBER CONNECTIN SAID INNER CONDUCTOR AND TWO REMAINING BOUNDARIES OF SAID FLAT RESISTIVE REGION ALONG A CENTRAL PORTION THEREOF, THE WIDTH OF SAID CENTRAL PORTION BEARING A FIXED RELATION TO SAID FIRST PREDETERMINED DISTANCE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |