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US2911167A
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US
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Assignee: Individual
•
Filing: 1952-04-08
•
Granted: 1959-11-03
•
Expires: 1972-04-08
Abstract
No abstract record available.
Inventors
- 👤 Fay E Null
- 👤 Lumir J Pieshek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:25
CPC Classifications
G; G01; G01S; G01S11/00; G01S11/12; G01S3/00; G01S3/78; G01S3/782; G01S3/785; G01S3/786
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE17784E
Cited
GB352035A
Cited
US1859597A
Cited
US2424193A
Cited
US2403387A
Cited
US2439294A
Cited
US2479953A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-02 | 1963-05-04 | 1963-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-02 | 1967-05-04 | 1967-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-02 | 1971-05-04 | 1971-11-03 | $7700.00 | Window Closed / Lapsed |