US3687782A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for the continuous production of helical circular wave guides
Assignee: Cables de Lyon SA
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Filing: 1969-11-18
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Granted: 1972-08-29
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Expires: 1989-11-18
Abstract
Abstract A circular, helicoidal wave guide of given length is continuously formed by making a support of several endless ribbons arranged longitudinally around a fixed chuck to slide virtually along the whole length of the chuck, and applying on the sliding support the various components of the guide, and driving the guide along longitudinally as it is formed, to extract it from the chuck.
Inventors
- 👤 Georges N Comte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:45
CPC Classifications
B; B29; B29C; B29C63/00; B29C63/26
Claims Analysis
Total Claims: 0
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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) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |