Patent US1972124A successfully refreshed from Google Patents.
US3290174A
Expired / Lapsed
US
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Two-stage process for derusting and protecting the surfaces of ferrous materials
Assignee: Rohr Inc
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Filing: 1964-12-28
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Granted: 1966-12-06
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Expires: 1984-12-28
Abstract
No abstract record available.
Inventors
- 👤 Earl W Kendall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:16
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02; C23G1/08; C23G1/088; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2414293A
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US2477851A
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US2558013A
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US2687346A
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US3019194A
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US3003896A
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US2942956A
Cited
US2981633A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |