US2544844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Case for microfilms
Assignee: Civile D'etudes & Inventions Liber Ste
•
Filing: 1947-08-05
•
Granted: 1951-03-13
•
Expires: 1967-08-05
Abstract
No abstract record available.
Inventors
- 👤 Liber Henri Sosthene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:29
CPC Classifications
B; B65; B65D; B65D75/00; B65D75/04; B65D75/06
Claims Analysis
Total Claims: 0
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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) | 1954-03-12 | 1954-09-11 | 1955-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-12 | 1958-09-11 | 1959-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-12 | 1962-09-11 | 1963-03-13 | $7700.00 | Window Closed / Lapsed |