US3453458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resonator supporting structure
Assignee: Clevite Corp
•
Filing: 1965-04-19
•
Granted: 1969-07-01
•
Expires: 1985-04-19
Abstract
No abstract record available.
Inventors
- 👤 Daniel R Curran
- 👤 James A Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:33
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/46; H03H9/54; H03H9/56; H03H9/02; H03H9/05; H03H9/0504; H03H9/0514; H03H9/10; H03H9/1007; H03H9/1014
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2912605A
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US3073975A
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US3173035A
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US3222462A
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US3185868A
Cited
US3222622A
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US3201621A
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US3359435A
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US3396287A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |