US2789372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Map and locating device
Assignee: Individual
•
Filing: 1955-08-17
•
Granted: 1957-04-23
•
Expires: 1975-08-17
Abstract
No abstract record available.
Inventors
- 👤 Charles F Ribak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:19
CPC Classifications
G; G09; G09B; G09B29/00; G09B29/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US975924A
Cited
GB191028149A
Cited
US1245311A
Cited
US1276657A
Cited
GB275450A
Cited
US2001633A
Cited
US2191109A
Cited
US2411300A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-22 | 1960-10-22 | 1961-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-22 | 1964-10-22 | 1965-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-22 | 1968-10-22 | 1969-04-23 | $7700.00 | Window Closed / Lapsed |