US2930918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High damping twisted wire
Assignee: General Electric Co
•
Filing: 1957-10-16
•
Granted: 1960-03-29
•
Expires: 1977-10-16
Abstract
No abstract record available.
Inventors
- 👤 Jr Louis F Coffin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:09
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/80; H01J29/803
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1478087A
Cited
US1986809A
Cited
US2359090A
Cited
US2486436A
Cited
US2477279A
Cited
US2612581A
Cited
US2677070A
Cited
US2778870A
Cited
US2757303A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |