US2951985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for monitoring a recurring pulse group
Assignee: Unisys Corp
•
Filing: 1954-09-28
•
Granted: 1960-09-06
•
Expires: 1974-09-28
Abstract
No abstract record available.
Inventors
- 👤 Hudson Kenneth
- 👤 Robert P Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:47
CPC Classifications
G; G01; G01R; G01R25/00; G01R13/00; G01R13/20; G01R13/208; H; H04; H04B; H04B17/00; H04B17/20; H04B17/21; H04B17/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB585909A
Cited
GB552072A
Cited
US2355363A
Cited
US2403429A
Cited
US2430570A
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US2609533A
Cited
US2689346A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-06 | 1964-03-07 | 1964-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-06 | 1968-03-07 | 1968-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-06 | 1972-03-07 | 1972-09-06 | $7700.00 | Window Closed / Lapsed |