US2866969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direction finder
Assignee: YAO MUSEN KK
•
Filing: 1955-03-07
•
Granted: 1958-12-30
•
Expires: 1975-03-07
Abstract
No abstract record available.
Inventors
- 👤 Takeuchi Saneyuki
- 👤 Mii Seihei
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:59
CPC Classifications
G; G01; G01S; G01S3/00; G01S3/02; G01S3/04; G01S3/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2460798A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |