Patent US2928343A successfully refreshed from Google Patents.
US2928343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Check stamping machine
Assignee: Individual
•
Filing: 1956-03-07
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Granted: 1960-03-15
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Expires: 1976-03-07
Abstract
No abstract record available.
Inventors
- 👤 Henry A Mintz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:47
CPC Classifications
B; B41; B41K; B41K3/00; B41K3/02; B41K3/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US874790A
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US896062A
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US891150A
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US1242454A
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US1294012A
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US1665099A
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US1765859A
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US1684934A
Cited
US1819158A
Cited
US1801197A
Cited
US1829004A
Cited
US1861208A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |