Patent US3637892A successfully refreshed from Google Patents.
US2636729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape handling device
Assignee: AT&T Inc
•
Filing: 1949-05-25
•
Granted: 1953-04-28
•
Expires: 1969-05-25
Abstract
No abstract record available.
Inventors
- 👤 Edward M Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 02:46
CPC Classifications
G; G06; G06K; G06K13/00; G06K13/18; G06K13/24
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US831437A
Cited
US1106067A
Cited
US1128801A
Cited
US1386573A
Cited
US1140254A
Cited
US1408894A
Cited
US1437949A
Cited
US1703677A
Cited
US1801739A
Cited
US1637658A
Cited
US2118627A
Cited
US2355668A
Cited
US2297128A
Cited
US2333065A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-27 | 1956-10-27 | 1957-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-27 | 1960-10-27 | 1961-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-27 | 1964-10-27 | 1965-04-28 | $7700.00 | Window Closed / Lapsed |