Patent US3189908A successfully refreshed from Google Patents.
US3189908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ridged waveguide slot antenna
Assignee: Individual
•
Filing: 1962-01-22
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Granted: 1965-06-15
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Expires: 1982-01-22
Abstract
No abstract record available.
Inventors
- 👤 Joseph H Provencher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:08
CPC Classifications
H; H01; H01Q; H01Q21/00; H01Q21/0006; H01Q21/0037; H01Q21/0043
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
AN ANTENNA COMPRISING; A RECTANGULAR WAVEGUIDE; A LOADING RIDGE MOUNTED ON AND PROJECTING INTERNALLY FROM A WALL OF SAID RECTANGULAR WAVEGUIDE; AT LEAST ONE RADIATING SLOT LOCATED ADJACENT TO THE RIDGE IN THE SAME WALL THAT THE LOADING RIDGE IS MOUNTED ON.
Claim 2
Dependent Claim
42 words
AN ANTENNA COMPRISING; A RECTANGULAR WAVEGUIDE; A LOADING RIDGE MOUNTED ON AND PROJECTING INTERNALLY FROM A WALL OF SAID RECTANGULAR WAVEGUIDE; AT LEAST ONE RADIATING SLOT LOCATED ADJACENT TO THE RIDGE IN THE SAME WALL THAT THE LOADING RIDGE IS MOUNTED ON.
References Cited (Backward Citations)
US2840818A
Cited
US2810907A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |