US2487044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compass
Assignee: Individual
•
Filing: 1945-10-01
•
Granted: 1949-11-08
•
Expires: 1965-10-01
Abstract
No abstract record available.
Inventors
- 👤 William C Cude
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:01
CPC Classifications
G; G01; G01C; G01C17/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191029677A
Cited
GB191314083A
Cited
GB191501818A
Cited
US2003179A
Cited
FR782576A
Cited
GB445312A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-07 | 1953-05-09 | 1953-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-07 | 1957-05-09 | 1957-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-07 | 1961-05-09 | 1961-11-08 | $7700.00 | Window Closed / Lapsed |