Patent US3367799A successfully refreshed from Google Patents.
US3367799A
Expired / Lapsed
US
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Process for cleaning aluminum
Assignee: United States Department of the Army
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Filing: 1963-10-08
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Granted: 1968-02-06
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Expires: 1983-10-08
Abstract
No abstract record available.
Inventors
- 👤 Frederick J Beyerle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:46
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02; C23G1/12; C23G1/125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA541570A
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CA574982A
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US2172041A
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US2428749A
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US2620265A
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US2705500A
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US2719796A
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US2867514A
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US2829091A
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US3197340A
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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) | 1971-02-05 | 1971-08-07 | 1972-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-05 | 1975-08-07 | 1976-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-05 | 1979-08-07 | 1980-02-06 | $7700.00 | Window Closed / Lapsed |