US2546586A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion prevention
Assignee: KANSAS CITY TESTING LAB
•
Filing: 1946-01-28
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Granted: 1951-03-27
•
Expires: 1966-01-28
Abstract
No abstract record available.
Inventors
- 👤 Jr Walter M Cross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:22
CPC Classifications
C; C04; C04B; C04B18/00; C04B18/02; C04B18/027; C04B28/00; C04B28/02; C04B28/10; C09; C09K; C09K8/00; C09K8/42; C09K8/46; C09K8/54; C23; C23F; C23F11/00; E; E21; E21B; E21B41/00; E21B41/02; C04B2111/00; C04B2111/40; C04B2111/42; Y; Y10; Y10S; Y10S166/00; Y10S166/902; Y10S507/00; Y10S507/902; Y10S507/939
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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FR730011A
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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) | 1954-03-26 | 1954-09-25 | 1955-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-26 | 1958-09-25 | 1959-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-26 | 1962-09-25 | 1963-03-27 | $7700.00 | Window Closed / Lapsed |