US2626858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbro process
Assignee: RICHARD F MCGRAW
•
Filing: 1945-12-11
•
Granted: 1953-01-27
•
Expires: 1965-12-11
Abstract
No abstract record available.
Inventors
- 👤 Richard F Mcgraw
- 👤 Werner G Alexewicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:29
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/20; G03C7/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1240344A
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US1992965A
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US2140648A
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US2385599A
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US2422387A
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US2381234A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-27 | 1956-07-28 | 1957-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-27 | 1960-07-28 | 1961-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-27 | 1964-07-28 | 1965-01-27 | $7700.00 | Window Closed / Lapsed |