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Patent US2604622A successfully refreshed from Google Patents.
US2604622A
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Test device for determining time delay in pulse repeaters
Assignee: Individual
•
Filing: 1949-03-30
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Granted: 1952-07-22
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Expires: 1969-03-30
Abstract
No abstract record available.
Inventors
- 👤 Arthur F Hasbrook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:24
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02; G01S1/08; G01S1/20; G01S1/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1750668A
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US2252083A
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US2198113A
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US2248727A
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US2453970A
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US2421016A
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US2531412A
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US2470787A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-22 | 1956-01-21 | 1956-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-22 | 1960-01-21 | 1960-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-22 | 1964-01-21 | 1964-07-22 | $7700.00 | Window Closed / Lapsed |