US3451871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating metallic surfaces
Assignee: Dessau Vetaphone Gesellschaft
•
Filing: 1965-05-25
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Granted: 1969-06-24
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Expires: 1985-05-25
Abstract
No abstract record available.
Inventors
- 👤 Heinrich Bauer
- 👤 Hans Romgens
- 👤 Hans-Jurgen Sontag
- 👤 Franz Zeppelzauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:23
CPC Classifications
B; B05; B05D; B05D3/00; B05D3/14; B05D3/141; B05D3/142; B05C; B05C9/00; B05C9/08; B05C9/10; B21; B21B; B21B39/00; B21B39/14; B23; B23K; B23K13/00; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B41; B41M; B41M1/00; B41M1/26; B41M1/28; C; C23; C23C; C23C14/00; C23C14/02; C23C14/021; C23C14/022; C23C4/00; C23C4/02; C23G; C23G5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2522082A
Cited
US2867912A
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US3037886A
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US3205094A
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US3281347A
Cited
US3323965A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-23 | 1972-12-23 | 1973-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-23 | 1976-12-23 | 1977-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-23 | 1980-12-23 | 1981-06-24 | $7700.00 | Window Closed / Lapsed |