Patent US3001279A successfully refreshed from Google Patents.
US3001279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of working hard brittle metals
Assignee: EVA R LEMERT
•
Filing: 1956-05-28
•
Granted: 1961-09-26
•
Expires: 1976-05-28
Abstract
No abstract record available.
Inventors
- 👤 John F Sherrill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:48
CPC Classifications
B; B21; B21J; B21J15/00; B21J15/02; B21D; B21D22/00; B21D22/02; B21D22/04; Y; Y10; Y10S; Y10S72/00; Y10S72/70; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/49947; Y10T29/49954; Y10T29/49956; Y10T29/49972; Y10T29/53; Y10T29/53709; Y10T29/5377; Y10T29/53774
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1585327A
Cited
US1430692A
Cited
US1910954A
Cited
US2156167A
Cited
US2382045A
Cited
US2393131A
Cited
US2413518A
Cited
US2441517A
Cited
US2578585A
Cited
US2697953A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-25 | 1965-03-27 | 1965-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-25 | 1969-03-27 | 1969-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-25 | 1973-03-27 | 1973-09-26 | $7700.00 | Window Closed / Lapsed |