US2496453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control apparatus
Assignee: Individual
•
Filing: 1943-12-16
•
Granted: 1950-02-07
•
Expires: 1963-12-16
Abstract
No abstract record available.
Inventors
- 👤 Harold F Elliott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:18
CPC Classifications
H; H03; H03J; H03J5/00; H03J5/02; H03J5/14; H03J5/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1203840A
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US1859531A
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US2246050A
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US2174552A
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US2164309A
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US2217066A
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US2281468A
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US2285414A
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US2293299A
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US2293355A
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US2334724A
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US2349146A
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US2378941A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-06 | 1953-08-08 | 1954-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-06 | 1957-08-08 | 1958-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-06 | 1961-08-08 | 1962-02-07 | $7700.00 | Window Closed / Lapsed |