US3523835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface treatment of metals
Assignee: Individual
•
Filing: 1967-06-22
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Granted: 1970-08-11
•
Expires: 1987-06-22
Abstract
No abstract record available.
Inventors
- 👤 Harold Leslie Turner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:06
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02; C11; C11D; C11D1/00; C11D1/02; C11D1/12; C11D1/123; C11D1/66; C11D1/72; C11D3/00; C11D3/16; C11D3/20; C11D3/2075; C11D3/2086; C11D3/2096; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/07; C23C22/23; C23C22/48; C23C22/50; C23C22/68; C23G1/08; C23G1/088; C23G1/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-10 | 1974-02-09 | 1974-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-10 | 1978-02-09 | 1978-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-10 | 1982-02-09 | 1982-08-11 | $7700.00 | Window Closed / Lapsed |