Patent US2250947A successfully refreshed from Google Patents.
US2250947A
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Assignee: Individual
•
Filing: 1938-06-17
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Granted: 1941-07-29
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Expires: 1958-06-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Albert Guy Carpenter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:33
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/04; F04B1/0404; F04B1/0452; F04B1/0456; F04B1/0408; F04B1/0439; F04B1/10; F04B1/107; F04B1/1071; F04B17/00; F04B17/03; F04C; F04C15/00; F04C15/0057; F04C15/008
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) | 1944-07-28 | 1945-01-27 | 1945-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-07-28 | 1949-01-27 | 1949-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-07-28 | 1953-01-27 | 1953-07-29 | $7700.00 | Window Closed / Lapsed |