US2415891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for sorting cards
Assignee: Individual
•
Filing: 1944-04-14
•
Granted: 1947-02-18
•
Expires: 1964-04-14
Abstract
No abstract record available.
Inventors
- 👤 Knauss Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:29
CPC Classifications
B; B29; B29C; B29C43/00; G; G06; G06K; G06K21/00; G06K21/02; G06K21/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1704259A
Cited
US1358389A
Cited
US2259463A
Cited
US2248536A
Cited
US2331175A
Cited
US2315860A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-02-17 | 1950-08-19 | 1951-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-02-17 | 1954-08-19 | 1955-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-02-17 | 1958-08-19 | 1959-02-18 | $7700.00 | Window Closed / Lapsed |