US2571301A
Expired / Lapsed
US
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Assignee: CORRO LITH CORP
•
Filing: 1948-09-30
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Granted: 1951-10-16
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Expires: 1968-09-30
Abstract
No abstract record available.
Inventors
- 👤 Slanhoff Bertram
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:02
CPC Classifications
A; A47; A47F; A47F5/00; A47F5/10; A47F5/11; A47F5/112
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US861935A
Cited
US1497456A
Cited
US1925673A
Cited
US1886532A
Cited
US1947195A
Cited
GB394878A
Cited
US2298427A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-15 | 1955-04-16 | 1955-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-15 | 1959-04-16 | 1959-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-15 | 1963-04-16 | 1963-10-16 | $7700.00 | Window Closed / Lapsed |