US2793941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for growing crystals
Assignee: Individual
•
Filing: 1954-06-28
•
Granted: 1957-05-28
•
Expires: 1974-06-28
Abstract
No abstract record available.
Inventors
- 👤 Nelson N Estes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:29
CPC Classifications
C; C30; C30B; C30B29/00; C30B29/10; C30B29/54; C30B29/56; C30B7/00; Y; Y10; Y10T; Y10T117/00; Y10T117/10; Y10T117/1024
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US719274A
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US984645A
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US1883379A
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US2164112A
Cited
US2123537A
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US2484829A
Cited
US2459869A
Cited
US2647043A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-27 | 1960-11-26 | 1961-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-27 | 1964-11-26 | 1965-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-27 | 1968-11-26 | 1969-05-28 | $7700.00 | Window Closed / Lapsed |