Patent US3149295A successfully refreshed from Google Patents.
US3149295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waveguide joining by criss-cross welding of extended flanges
Assignee: Dow Chemical Co
•
Filing: 1962-05-28
•
Granted: 1964-09-15
•
Expires: 1982-05-28
Abstract
No abstract record available.
Inventors
- 👤 John J Grebe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:03
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/04; H01P1/042; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49016; Y10T29/49018
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
92 words
A WAVEGUIDE JOINT COMPRISING, IN COMBINATION TWO WAVEGUIDE SEGMENTS HAVING A CONTINUOUS INNER SURFACE, ONE END OF ONE SUCH WAVEGUIDE SEGMENT HAVING A CIRCUMFERENTIAL FLANGE UNITARY WITH, AND APPROXIMATELY PARALLEL TO THE LONGITUDINAL AXIS OF SAID WAVEGUIDE SEGMENT, ONE END OF THE SECOND SUCH WAVEGUIDE SEGMENT BEING EXPANDED SO AS TO CLOSELY FIT AROUND THE CIRCUMFERENTIAL FLANGE OF THE FIRST WAVEGUIDE SEGMENT, AND AT LEAST TWO CONTINUOUS, CIRCUMFERENTIAL WELDS JOINING SAID FIRST AND SECOND WAVEGUIDE SEGMENTS ONLY IN THE AREA OF CONTACT OF THE CIRCUMFERENTIAL FLANGE OF THE FIRST WAVEGUIDE SEGMENT WITH
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) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |