US2848775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of controlling the properties of metals and metal alloys by irradiation with vibrations
Assignee: Etma S A
•
Filing: 1953-09-17
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Granted: 1958-08-26
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Expires: 1973-09-17
Abstract
No abstract record available.
Inventors
- 👤 Ettenreich Ludwig Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:36
CPC Classifications
C; C21; C21D; C21D10/00; C21D1/00; C21D1/04; C22; C22F; C22F3/00; Y; Y10; Y10S; Y10S29/00; Y10S29/046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1061760A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-25 | 1962-02-24 | 1962-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-25 | 1966-02-24 | 1966-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-25 | 1970-02-24 | 1970-08-26 | $7700.00 | Window Closed / Lapsed |