US2612693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sun compass
Assignee: Individual
•
Filing: 1951-03-08
•
Granted: 1952-10-07
•
Expires: 1971-03-08
Abstract
No abstract record available.
Inventors
- 👤 Erick O Schonstedt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:10
CPC Classifications
G; G01; G01C; G01C17/00; G01C17/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US4964A
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US499087A
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US1961312A
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US2456392A
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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) | 1955-10-07 | 1956-04-07 | 1956-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-07 | 1960-04-07 | 1960-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-07 | 1964-04-07 | 1964-10-07 | $7700.00 | Window Closed / Lapsed |