Patent US2173371A successfully refreshed from Google Patents.
US2173371A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1939-05-06
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Granted: 1939-09-19
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Expires: 1959-05-06
Abstract
No abstract record available.
Inventors
- 👤 Penoyer James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:16
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/0001; G02B6/0011; G02B6/0013; G02B6/0023; G02B6/0026; G09; G09F; G09F13/00; G09F13/18; G09F2013/1886; G09F2013/189; G09F2013/1895; Y; Y10; Y10S; Y10S362/00; Y10S362/812
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-09-18 | 1943-03-20 | 1943-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-09-18 | 1947-03-20 | 1947-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-09-18 | 1951-03-20 | 1951-09-19 | $7700.00 | Window Closed / Lapsed |