Patent US2464822A successfully refreshed from Google Patents.
US2464822A
Expired / Lapsed
US
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Indicating device
Assignee: Unisys Corp
•
Filing: 1943-08-16
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Granted: 1949-03-22
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Expires: 1963-08-16
Abstract
No abstract record available.
Inventors
- 👤 John D Mallett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:53
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/42; G01S13/422
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1978684A
Cited
US2153140A
Cited
US2059004A
Cited
US2237604A
Cited
US2220183A
Cited
US2312203A
Cited
US2347529A
Cited
US2412291A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-21 | 1952-09-20 | 1953-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-21 | 1956-09-20 | 1957-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-21 | 1960-09-20 | 1961-03-22 | $7700.00 | Window Closed / Lapsed |