US2992995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkaline composition for cleaning metal
Assignee: Purex Corp Ltd
•
Filing: 1955-05-25
•
Granted: 1961-07-18
•
Expires: 1975-05-25
Abstract
No abstract record available.
Inventors
- 👤 Arden Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:38
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2673842A
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US2626879A
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US2739883A
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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) | 1964-07-17 | 1965-01-16 | 1965-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-17 | 1969-01-16 | 1969-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-17 | 1973-01-16 | 1973-07-18 | $7700.00 | Window Closed / Lapsed |