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US2497242A
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Assignee: Individual
•
Filing: 1946-08-19
•
Granted: 1950-02-14
•
Expires: 1966-08-19
Abstract
No abstract record available.
Inventors
- 👤 Verner E Sprouse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:05
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/26; F04D29/263; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49481; Y10T29/49492; Y10T29/49533; Y10T29/49535
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1309804A
Cited
US671427A
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US927311A
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US1137240A
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US1129989A
Cited
GB247067A
Cited
US1971433A
Cited
GB453626A
Cited
US2156047A
Cited
US2292346A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-13 | 1953-08-15 | 1954-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-13 | 1957-08-15 | 1958-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-13 | 1961-08-15 | 1962-02-14 | $7700.00 | Window Closed / Lapsed |