US2443522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Index card and signal
Assignee: Acme Visible Records Inc
•
Filing: 1944-11-13
•
Granted: 1948-06-15
•
Expires: 1964-11-13
Abstract
No abstract record available.
Inventors
- 👤 Perry R Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:17
CPC Classifications
B; B42; B42F; B42F19/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US905319A
Cited
US885482A
Cited
US1114518A
Cited
US941273A
Cited
US999991A
Cited
US1008352A
Cited
US1127481A
Cited
US1332954A
Cited
GB154336A
Cited
US1550838A
Cited
US1758334A
Cited
US1816344A
Cited
GB522386A
Cited
US2260069A
Cited
US2336572A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-15 | 1951-12-15 | 1952-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-15 | 1955-12-15 | 1956-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-15 | 1959-12-15 | 1960-06-15 | $7700.00 | Window Closed / Lapsed |