US2847648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printed delay line
Assignee: CONTROL ELECTRONICS Co IN
•
Filing: 1954-02-02
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Granted: 1958-08-12
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Expires: 1974-02-02
Abstract
No abstract record available.
Inventors
- 👤 Eugene S Wendolkowski
- 👤 Alfred C Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:06
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/30; H03H7/32; Y; Y10; Y10T; Y10T29/00; Y10T29/43
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1682712A
Cited
US1650395A
Cited
GB314167A
Cited
US2431023A
Cited
US2603737A
Cited
US2637778A
Cited
US2694185A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-11 | 1962-02-10 | 1962-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-11 | 1966-02-10 | 1966-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-11 | 1970-02-10 | 1970-08-12 | $7700.00 | Window Closed / Lapsed |