Patent US2931292A successfully refreshed from Google Patents.
US2931292A
Expired / Lapsed
US
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Marking machines
Assignee: R H HARTNETT Co
•
Filing: 1956-08-28
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Granted: 1960-04-05
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Expires: 1976-08-28
Abstract
No abstract record available.
Inventors
- 👤 Charles E Ackley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:07
CPC Classifications
B; B41; B41F; B41F17/00; B41F17/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE838122C
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CA502800A
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US1283579A
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US1334822A
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US1465638A
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US1460778A
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US1616101A
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US1845726A
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US1854215A
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US2074383A
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US2273759A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |