Patent US2595268A successfully refreshed from Google Patents.
US2595268A
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Instrument providing a vertical reference for dirigible craft
Assignee: Unisys Corp
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Filing: 1946-10-26
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Granted: 1952-05-06
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Expires: 1966-10-26
Abstract
No abstract record available.
Inventors
- 👤 Kellogg Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:45
CPC Classifications
G; G01; G01C; G01C19/00; G01C19/02; G01C19/44; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1229; Y10T74/1257; Y10T74/1282
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1308693A
Cited
USRE20701E
Cited
US865277A
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US865278A
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US1137258A
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US1086242A
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US1148154A
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US1679354A
Cited
US2181250A
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US2338098A
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US2293039A
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US2351619A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-06 | 1955-11-05 | 1956-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-06 | 1959-11-05 | 1960-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-06 | 1963-11-05 | 1964-05-06 | $7700.00 | Window Closed / Lapsed |