US2994814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: —
•
Filing: —
•
Granted: 1961-08-01
•
Expires: 1978-08-01
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:44
CPC Classifications
H; H03; H03J; H03J5/00; H03J5/02; H03J5/14; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86389
Claims Analysis
Total Claims: 0
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US1865604A
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US2478702A
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US2611392A
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US2421481A
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US2738807A
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US2661060A
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US2776009A
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US2851099A
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US2874773A
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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) | 1964-07-31 | 1965-01-30 | 1965-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-31 | 1969-01-30 | 1969-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-31 | 1973-01-30 | 1973-08-01 | $7700.00 | Window Closed / Lapsed |