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US2817832A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1951-02-02
•
Granted: 1957-12-24
•
Expires: 1971-02-02
Abstract
No abstract record available.
Inventors
- 👤 Robert H Mathes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:36
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/08; G01S13/10; G01S13/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2444388A
Cited
US2459811A
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US2522367A
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US2513282A
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US2525328A
Cited
US2528202A
Cited
US2517752A
Cited
US2483097A
Cited
US2700156A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-23 | 1961-06-24 | 1961-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-23 | 1965-06-24 | 1965-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-23 | 1969-06-24 | 1969-12-24 | $7700.00 | Window Closed / Lapsed |