Patent US2301938A successfully refreshed from Google Patents.
US2301938A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1939-08-16
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Granted: 1942-11-17
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Expires: 1959-08-16
Abstract
No abstract record available.
Inventors
- 👤 Charles D Fator
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:30
CPC Classifications
B; B01; B01L; B01L7/00; F; F25; F25B; F25B49/00; F25B49/02; F25D; F25D17/00; F25D17/02; G; G05; G05D; G05D23/00; G05D23/19; G05D23/1919; G05D23/275
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) | 1945-11-16 | 1946-05-18 | 1946-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-11-16 | 1950-05-18 | 1950-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-11-16 | 1954-05-18 | 1954-11-17 | $7700.00 | Window Closed / Lapsed |