Patent US2547899A successfully refreshed from Google Patents.
US2547899A
Expired / Lapsed
US
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Pressure mechanism for box forming machines
Assignee: Individual
•
Filing: 1947-06-04
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Granted: 1951-04-03
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Expires: 1967-06-04
Abstract
No abstract record available.
Inventors
- 👤 Jr Julius A Zinn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:57
CPC Classifications
B; B31; B31B; B31B50/00; B31B50/26; B31B50/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US12511A
Cited
US119307A
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GB189628409A
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US755754A
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US952075A
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US1015268A
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US1020821A
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US2176147A
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US2229864A
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US2192950A
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US2480176A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |