US2818544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zero impedance circuit
Assignee: Garrett Corp
•
Filing: 1953-01-19
•
Granted: 1957-12-31
•
Expires: 1973-01-19
Abstract
No abstract record available.
Inventors
- 👤 William H Mccormack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:06
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/34; H03F1/36; G; G01; G01K; G01K7/00; G01K7/16; G01K7/22; G01K7/24; G01R; G01R1/00; G01R1/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-30 | 1961-07-01 | 1961-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-30 | 1965-07-01 | 1965-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-30 | 1969-07-01 | 1969-12-31 | $7700.00 | Window Closed / Lapsed |