Patent US2508408A successfully refreshed from Google Patents.
US2508408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Averaging indicator
Assignee: Individual
•
Filing: 1943-10-11
•
Granted: 1950-05-23
•
Expires: 1963-10-11
Abstract
No abstract record available.
Inventors
- 👤 Sidney H Liebson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:12
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/28; G01S7/285; G01S7/292; G01S7/2923; G01S7/2926; Y; Y10; Y10S; Y10S367/00; Y10S367/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1976400A
Cited
US2191565A
Cited
US2219021A
Cited
US2412669A
Cited
US2422135A
Cited
US2430038A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-22 | 1953-11-21 | 1954-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-22 | 1957-11-21 | 1958-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-22 | 1961-11-21 | 1962-05-23 | $7700.00 | Window Closed / Lapsed |