Patent US2662528A successfully refreshed from Google Patents.
US2662528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Record keeping machine and card units
Assignee: MICHAEL S HERZOG
•
Filing: 1951-10-24
•
Granted: 1953-12-15
•
Expires: 1971-10-24
Abstract
No abstract record available.
Inventors
- 👤 Eleanor G Herzog
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:29
CPC Classifications
B; B42; B42F; B42F17/00; B42F17/28
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB135604A
Cited
US1647548A
Cited
US927107A
Cited
US1296956A
Cited
US1352506A
Cited
US1433847A
Cited
US1440048A
Cited
US1657471A
Cited
US1619760A
Cited
DE596590C
Cited
US1922736A
Cited
US2328055A
Cited
GB550070A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |