US3539949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stacked printed capacitor delay line
Assignee: Sprague Electric Co
•
Filing: 1968-04-03
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Granted: 1970-11-10
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Expires: 1988-04-03
Abstract
No abstract record available.
Inventors
- 👤 Ronald K Floser
- 👤 John W Guetersloh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:11
CPC Classifications
H; H05; H05K; H05K5/00; H05K5/0091; H01; H01G; H01G4/00; H01G4/30; H03; H03H; H03H7/00; H03H7/30; H03H7/32
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) | 1973-11-09 | 1974-05-11 | 1974-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-09 | 1978-05-11 | 1978-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-09 | 1982-05-11 | 1982-11-10 | $7700.00 | Window Closed / Lapsed |