US2477651A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stereoscopic position indicating means
Assignee: Individual
•
Filing: 1944-06-27
•
Granted: 1949-08-02
•
Expires: 1964-06-27
Abstract
No abstract record available.
Inventors
- 👤 Richard H Ranger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:31
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/04; G01S7/06; G01S7/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1816181A
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US1743952A
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US1864899A
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US1858353A
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US1921630A
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US1987765A
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US2227598A
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US2189549A
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US2352176A
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US2307981A
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US2359703A
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US2388858A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-01 | 1953-01-31 | 1953-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-01 | 1957-01-31 | 1957-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-01 | 1961-01-31 | 1961-08-02 | $7700.00 | Window Closed / Lapsed |