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US2825512A
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Assignee: Artos Engineering Co
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Filing: 1953-10-19
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Granted: 1958-03-04
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Expires: 1973-10-19
Abstract
No abstract record available.
Inventors
- 👤 Karl H Andren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:20
CPC Classifications
B; B21; B21F; B21F23/00; B21F23/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2222189A
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US2233015A
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US2255935A
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US2357474A
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US2338605A
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US2360741A
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US2407899A
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US2598540A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-03 | 1961-09-02 | 1962-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-03 | 1965-09-02 | 1966-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-03 | 1969-09-02 | 1970-03-04 | $7700.00 | Window Closed / Lapsed |