US2163984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of a rust-preventing coating on metallic objects
Assignee: Individual
•
Filing: 1936-12-07
•
Granted: 1939-06-27
•
Expires: 1956-12-07
Abstract
No abstract record available.
Inventors
- 👤 Petkovic Valentin Anton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:29
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/08; C09D5/12; Y; Y10; Y10S; Y10S524/00; Y10S524/925; Y10S524/926
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-06-26 | 1942-12-26 | 1943-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-06-26 | 1946-12-26 | 1947-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-06-26 | 1950-12-26 | 1951-06-27 | $7700.00 | Window Closed / Lapsed |