Patent US2699612A successfully refreshed from Google Patents.
US2699612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Azimuth data providing system for dirigible craft
Assignee: Unisys Corp
•
Filing: 1950-01-31
•
Granted: 1955-01-18
•
Expires: 1970-01-31
Abstract
No abstract record available.
Inventors
- 👤 Nd Spencer Kellogg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:02
CPC Classifications
G; G01; G01C; G01C19/00; G01C19/02; G01C19/34; G01C19/36
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
FR49251E
Cited
FR793301A
Cited
GB576412A
Cited
US2555328A
Cited
GB586506A
Cited
US2611191A
Cited
US2414128A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-17 | 1958-07-19 | 1959-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-17 | 1962-07-19 | 1963-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-17 | 1966-07-19 | 1967-01-18 | $7700.00 | Window Closed / Lapsed |