US2663006A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crystal mounting for delay lines
Assignee: CRYSTAL RES LAB Inc
•
Filing: 1948-11-19
•
Granted: 1953-12-15
•
Expires: 1968-11-19
Abstract
No abstract record available.
Inventors
- 👤 Walther M A Andersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:25
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/30; H03H9/36; H03H9/02; H03H9/125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2137852A
Cited
US1955471A
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US2044000A
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US2411401A
Cited
US2421026A
Cited
US2505515A
Cited
US2512130A
Cited
US2458581A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |