Patent US2524704A successfully refreshed from Google Patents.
US2524704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Card indexing device
Assignee: Individual
•
Filing: 1947-04-26
•
Granted: 1950-10-03
•
Expires: 1967-04-26
Abstract
No abstract record available.
Inventors
- 👤 Henderson Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:28
CPC Classifications
B; B42; B42F; B42F17/00; B42F17/34; B42F17/346; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18288
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US513343A
Cited
US647218A
Cited
US700906A
Cited
US834294A
Cited
US854110A
Cited
US856841A
Cited
US1069122A
Cited
US1531429A
Cited
US1543599A
Cited
US2329300A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-02 | 1954-04-03 | 1954-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-02 | 1958-04-03 | 1958-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-02 | 1962-04-03 | 1962-10-03 | $7700.00 | Window Closed / Lapsed |