Patent US2467412A successfully refreshed from Google Patents.
US2467412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Navigation instrument
Assignee: Unisys Corp
•
Filing: 1944-06-09
•
Granted: 1949-04-19
•
Expires: 1964-06-09
Abstract
No abstract record available.
Inventors
- 👤 Robert L Wathen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:34
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US791785A
Cited
US840569A
Cited
US1275786A
Cited
US1991892A
Cited
US1981589A
Cited
US1999047A
Cited
US2226930A
Cited
US2225046A
Cited
US2262245A
Cited
US2264063A
Cited
GB538214A
Cited
US2235390A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-18 | 1952-10-18 | 1953-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-18 | 1956-10-18 | 1957-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-18 | 1960-10-18 | 1961-04-19 | $7700.00 | Window Closed / Lapsed |