Patent US1698724A successfully refreshed from Google Patents.
Patent US2457050A successfully refreshed from Google Patents.
US2457050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printing mechanism fob adding
Assignee: —
•
Filing: —
•
Granted: 1948-12-21
•
Expires: 1965-12-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:22
CPC Classifications
G; G06; G06C; G06C11/00; G06C11/04; G06C21/00; G06C21/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1323381A
Cited
US1359173A
Cited
US1730147A
Cited
US1854875A
Cited
US1395121A
Cited
US1701307A
Cited
US2183829A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-21 | 1952-06-21 | 1952-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-21 | 1956-06-21 | 1956-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-21 | 1960-06-21 | 1960-12-21 | $7700.00 | Window Closed / Lapsed |