US2794928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage comparison means
Assignee: Unisys Corp
•
Filing: 1949-10-13
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Granted: 1957-06-04
•
Expires: 1969-10-13
Abstract
No abstract record available.
Inventors
- 👤 Frank Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:28
CPC Classifications
G; G01; G01R; G01R25/00; G05; G05D; G05D3/00; G05D3/12; G05D3/14; G05D3/1436
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2410843A
Cited
US2411916A
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US2411876A
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US2467361A
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US2595675A
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US2423229A
Cited
US2562329A
Cited
US2541454A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-03 | 1960-12-03 | 1961-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-03 | 1964-12-03 | 1965-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-03 | 1968-12-03 | 1969-06-04 | $7700.00 | Window Closed / Lapsed |