US2757445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hard surface composite article and method of making
Assignee: Duraloy Co
•
Filing: 1950-04-04
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Granted: 1956-08-07
•
Expires: 1970-04-04
Abstract
No abstract record available.
Inventors
- 👤 Earl M Anger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:07
CPC Classifications
C; C23; C23C; C23C26/00; B; B21; B21B; B21B39/00; B21B39/008; C23C28/00; C23C28/30; C23C28/32; C23C28/321; C23C28/324; C23C28/34; C23C28/347; C23C28/36; C23C4/00; C23C4/18; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10T; Y10T428/00; Y10T428/12; Y10T428/12458; Y10T428/12493; Y10T428/1266; Y10T428/12667; Y10T428/12736; Y10T428/1275; Y10T428/12757; Y10T428/12986
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
48 words
IN COMBINATION, A FURNACE CONVEYOR ELEMENT HAVING A WORK-SUPPORTING FERROUS OR ALLOY BODY, SAID BODY HAVING A MELTING POINT ABOVE ABOUT 1400* F., AN ALUMINUM OXIDE SURFACE CONVERING THE WORK-ENGAGING PORTION OF SAID BODY, SAID SURFACE BEING IN WELD RELATION TO THE WORKENGAGING EXTERIOR PORTION OF SAID BODY.
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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) | 1959-08-07 | 1960-02-06 | 1960-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-07 | 1964-02-06 | 1964-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-07 | 1968-02-06 | 1968-08-07 | $7700.00 | Window Closed / Lapsed |