Patent US3044389A successfully refreshed from Google Patents.
US3044389A
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US
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Assignee: Koehring Co
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Filing: 1960-06-14
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Granted: 1962-07-17
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Expires: 1980-06-14
Abstract
No abstract record available.
Inventors
- 👤 Kenneth B Rexford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:49
CPC Classifications
B; B30; B30B; B30B15/00; B30B15/16; B30B15/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1025559A
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US1240332A
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US2110593A
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US2328258A
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US2575792A
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US2927258A
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US2820187A
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US2892526A
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US2876650A
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US2854114A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-16 | 1966-01-15 | 1966-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-16 | 1970-01-15 | 1970-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-16 | 1974-01-15 | 1974-07-17 | $7700.00 | Window Closed / Lapsed |