US2761413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic route indicator
Assignee: Individual
•
Filing: 1952-04-09
•
Granted: 1956-09-04
•
Expires: 1972-04-09
Abstract
No abstract record available.
Inventors
- 👤 Breer Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:08
CPC Classifications
G; G09; G09B; G09B29/00; G09B29/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1484064A
Cited
US2177905A
Cited
US2330951A
Cited
US2431827A
Cited
US2448611A
Cited
US2567189A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-04 | 1960-03-05 | 1960-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-04 | 1964-03-05 | 1964-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-04 | 1968-03-05 | 1968-09-04 | $7700.00 | Window Closed / Lapsed |