US3537895A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copper and aluminum pickling
Assignee: LANCY LAB
•
Filing: 1967-09-19
•
Granted: 1970-11-03
•
Expires: 1987-09-19
Abstract
No abstract record available.
Inventors
- 👤 Leslie E Lancy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:33
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02; C01; C01B; C01B15/00; C01B15/01; C01B15/037; C23G1/10; C23G1/103; C23G1/12; C23G1/125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2426154A
Cited
US2428804A
Cited
US2676900A
Cited
US2965521A
Cited
US2856275A
Cited
US3345225A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-02 | 1974-05-04 | 1974-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-02 | 1978-05-04 | 1978-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-02 | 1982-05-04 | 1982-11-03 | $7700.00 | Window Closed / Lapsed |