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Patent US2333997A successfully refreshed from Google Patents.
US2333997A
Expired / Lapsed
US
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Cathode forming machine
Assignee: RCA Corp
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Filing: 1940-12-14
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Granted: 1943-11-09
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Expires: 1960-12-14
Abstract
No abstract record available.
Inventors
- 👤 Glans Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:58
CPC Classifications
B; B21; B21D; B21D39/00; B21D39/02; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/5313; Y10T29/53174
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) | 1946-11-08 | 1947-05-10 | 1947-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-11-08 | 1951-05-10 | 1951-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-11-08 | 1955-05-10 | 1955-11-09 | $7700.00 | Window Closed / Lapsed |