Patent EP0458745B1 successfully refreshed from Google Patents.
US2549860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and means for indicating a chosen area
Assignee: Individual
•
Filing: 1936-09-10
•
Granted: 1951-04-24
•
Expires: 1956-09-10
Abstract
No abstract record available.
Inventors
- 👤 Swanson Mark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:33
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2012412A
Cited
US1463797A
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FR578105A
Cited
US1813491A
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US2039812A
Cited
GB408321A
Cited
GB391374A
Cited
US1948552A
Cited
US2165256A
Cited
US2074226A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-23 | 1954-10-23 | 1955-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-23 | 1958-10-23 | 1959-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-23 | 1962-10-23 | 1963-04-24 | $7700.00 | Window Closed / Lapsed |