US3051919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter-transformers
Assignee: Clevite Corp
•
Filing: 1958-09-17
•
Granted: 1962-08-28
•
Expires: 1978-09-17
Abstract
No abstract record available.
Inventors
- 👤 Donald P Faulk
- 👤 William J Gerber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 07:54
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/46; H03H9/54; H03H9/58; H03H9/581; H10; H10N; H10N30/00; H10N30/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1923354A
Cited
US2276013A
Cited
US2343633A
Cited
US2342875A
Cited
US2729708A
Cited
US2877432A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |