Patent US2667578A successfully refreshed from Google Patents.
US2667578A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swivel joint for coaxial transmission lines
Assignee: Hughes Tool Co
•
Filing: 1950-01-31
•
Granted: 1954-01-26
•
Expires: 1970-01-31
Abstract
No abstract record available.
Inventors
- 👤 Wilford J Barnett
- 👤 Clarence G Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:27
CPC Classifications
H; H01; H01R; H01R35/00; H01R35/04; H01R39/00; H01R39/64
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1870959A
Cited
US2451876A
Cited
US2412867A
Cited
US2478913A
Cited
US2411472A
Cited
US2498056A
Cited
US2479897A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-25 | 1957-07-27 | 1958-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-25 | 1961-07-27 | 1962-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-25 | 1965-07-27 | 1966-01-26 | $7700.00 | Window Closed / Lapsed |