US2645996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printing machine
Assignee: CHECKMASTER SYSTEMS Inc
•
Filing: 1950-10-05
•
Granted: 1953-07-21
•
Expires: 1970-10-05
Abstract
No abstract record available.
Inventors
- 👤 Charles G Krakenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:53
CPC Classifications
B; B41; B41K; B41K3/00; B41K3/02; B41K3/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US16837A
Cited
US21997A
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US37884A
Cited
US38043A
Cited
US99395A
Cited
US289047A
Cited
US1326111A
Cited
US833742A
Cited
US2443137A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-20 | 1957-01-19 | 1957-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-20 | 1961-01-19 | 1961-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-20 | 1965-01-19 | 1965-07-21 | $7700.00 | Window Closed / Lapsed |