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US2209444A
Expired / Lapsed
US
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Manufactures from dolomitic materials
Assignee: Individual
•
Filing: 1938-02-17
•
Granted: 1940-07-30
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Expires: 1958-02-17
Abstract
No abstract record available.
Inventors
- 👤 Becze George De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:16
CPC Classifications
C; C01; C01F; C01F5/00; C01F5/24
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) | 1943-07-30 | 1944-01-29 | 1944-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-07-30 | 1948-01-29 | 1948-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-07-30 | 1952-01-29 | 1952-07-30 | $7700.00 | Window Closed / Lapsed |