US2477448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friedman
Assignee: —
•
Filing: —
•
Granted: 1949-07-26
•
Expires: 1966-07-26
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:12
CPC Classifications
C; C14; C14B; C14B1/00; C14B1/02; C14B1/04; C14B1/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US151144A
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US1702465A
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US1343355A
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US1860713A
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US1737085A
Cited
US1686768A
Cited
US1662933A
Cited
US1874273A
Cited
US2058502A
Cited
US2328643A
Cited
US2376500A
Cited
US2407380A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-25 | 1953-01-24 | 1953-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-25 | 1957-01-24 | 1957-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-25 | 1961-01-24 | 1961-07-26 | $7700.00 | Window Closed / Lapsed |