US2797329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mercury contact switch impulse generator
Assignee: Research Corp
•
Filing: 1954-11-04
•
Granted: 1957-06-25
•
Expires: 1974-11-04
Abstract
No abstract record available.
Inventors
- 👤 Roscoe H George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:13
CPC Classifications
H; H01; H01H; H01H29/00; H01H29/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1289637A
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US1975762A
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US2060235A
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US2445406A
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US2459306A
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US2485024A
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US2448364A
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US2519463A
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US2584901A
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US2609464A
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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) | 1960-06-24 | 1960-12-24 | 1961-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-24 | 1964-12-24 | 1965-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-24 | 1968-12-24 | 1969-06-25 | $7700.00 | Window Closed / Lapsed |