US2314604A
Expired / Lapsed
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Method of producing chromium wearing surfaces
Assignee: Van Der Horst Corp of America
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Filing: 1939-04-25
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Granted: 1943-03-23
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Expires: 1959-04-25
Abstract
No abstract record available.
Inventors
- 👤 Horst Henderik Van Der
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:33
CPC Classifications
F; F02; F02B; F02B77/00; F02B77/02; C; C25; C25D; C25D5/00; C25D5/48; C25D7/00; C25D7/04; C25F; C25F3/00; C25F3/02; C25F3/08; F02F; F02F1/00; F02F1/18; F02F1/20; F05; F05C; F05C2201/00; F05C2201/04; F05C2201/0403; F05C2201/0406; Y; Y10; Y10S; Y10S29/00; Y10S29/012; Y10S417/00; Y10S417/01; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/934; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49643; Y10T29/49647; Y10T29/49668; Y10T29/49677; Y10T29/49705; Y10T29/49709; Y10T29/4998; Y10T29/49982; Y10T428/00; Y10T428/12; Y10T428/12479; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12826; Y10T428/12847; Y10T428/12861; Y10T428/12993
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) | 1946-03-22 | 1946-09-21 | 1947-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-03-22 | 1950-09-21 | 1951-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-03-22 | 1954-09-21 | 1955-03-23 | $7700.00 | Window Closed / Lapsed |