US2958057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary variable inductor and method of making the same
Assignee: RTX Corp
•
Filing: 1955-11-29
•
Granted: 1960-10-25
•
Expires: 1975-11-29
Abstract
No abstract record available.
Inventors
- 👤 Berman Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:20
CPC Classifications
H; H01; H01F; H01F29/00; H01F29/08; H01F29/10; H01F3/00; H01F3/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US352105A
Cited
US1750149A
Cited
DE537012C
Cited
US1868318A
Cited
US1988734A
Cited
US2654142A
Cited
US2585050A
Cited
FR1081879A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-25 | 1964-04-25 | 1964-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-25 | 1968-04-25 | 1968-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-25 | 1972-04-25 | 1972-10-25 | $7700.00 | Window Closed / Lapsed |