US2902583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for working materials by means of a beam of charged particles
Assignee: Carl Zeiss AG
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Filing: 1956-06-22
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Granted: 1959-09-01
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Expires: 1976-06-22
Abstract
No abstract record available.
Inventors
- 👤 Steigerwald Karl Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:18
CPC Classifications
C; C22; C22B; C22B60/00; C22B60/02; C22B60/0204; C22B60/0217; C22B60/0252; C22B60/026; B; B23; B23K; B23K15/00; C22B60/0291; G; G21; G21C; G21C19/00; G21C19/42; G21C19/44; G21C19/46; H; H01; H01J; H01J37/00; H01J37/30; H01J37/302; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y02W; Y02W30/00; Y02W30/50; Y10; Y10S; Y10S164/00; Y10S164/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1715017A
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US2046969A
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US2267752A
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US2267714A
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US2778926A
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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) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |