US2447098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signaling system
Assignee: Stanolind Oil and Gas Co
•
Filing: 1943-06-28
•
Granted: 1948-08-17
•
Expires: 1963-06-28
Abstract
No abstract record available.
Inventors
- 👤 Silverman Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:36
CPC Classifications
G; G01; G01V; G01V3/00; G01V3/18; G01V3/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1999215A
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US2112826A
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US2041855A
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US2126910A
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US2121103A
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US2165510A
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US2233198A
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US2192022A
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US2245685A
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US2380947A
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US2396360A
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US2379689A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-17 | 1952-02-16 | 1952-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-17 | 1956-02-16 | 1956-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-17 | 1960-02-16 | 1960-08-17 | $7700.00 | Window Closed / Lapsed |