US2762018A
Expired / Lapsed
US
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Reactance networks with structural symmetry
Assignee: Individual
•
Filing: 1950-10-09
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Granted: 1956-09-04
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Expires: 1970-10-09
Abstract
No abstract record available.
Inventors
- 👤 Ellison S Purington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:17
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/01; H03H7/17; H03H7/1741; H03H7/175; H03H7/0115; H03H7/1716; H03H7/1725; H03H7/1758; H03H7/1766; H03H7/1775
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1611932A
Cited
US1644004A
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US1770421A
Cited
FR706006A
Cited
US2029698A
Cited
US2177761A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-04 | 1960-03-05 | 1960-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-04 | 1964-03-05 | 1964-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-04 | 1968-03-05 | 1968-09-04 | $7700.00 | Window Closed / Lapsed |