US2968723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for controlling crystal structure of materials
Assignee: Carl Zeiss AG
•
Filing: 1957-04-11
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Granted: 1961-01-17
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Expires: 1977-04-11
Abstract
No abstract record available.
Inventors
- 👤 Steigerwald Karl Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:33
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/30; H01J37/304; H01J37/02; H01J37/20; H01J37/24; H01J37/301; Y; Y10; Y10S; Y10S117/00; Y10S117/905; Y10S164/00; Y10S164/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2267752A
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US2267714A
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US2423729A
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US2244056A
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US2771568A
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US2793282A
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US2778926A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-17 | 1964-07-18 | 1965-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-17 | 1968-07-18 | 1969-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-17 | 1972-07-18 | 1973-01-17 | $7700.00 | Window Closed / Lapsed |