Patent US2485979A successfully refreshed from Google Patents.
US2485979A
Expired / Lapsed
US
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Bending single crystals of corundum and spinel
Assignee: Linde Air Products Co
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Filing: 1946-07-24
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Granted: 1949-10-25
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Expires: 1966-07-24
Abstract
No abstract record available.
Inventors
- 👤 Edward L Mccandless
- 👤 Donald M Yenni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:26
CPC Classifications
C; C30; C30B; C30B29/00; C30B29/10; C30B29/16; C30B29/22; C30B29/26; Y; Y10; Y10S; Y10S65/00; Y10S65/08; Y10T; Y10T428/00; Y10T428/29; Y10T428/2904; Y10T428/2909
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1264355A
Cited
GB165052A
Cited
US1580199A
Cited
GB243251A
Cited
GB396018A
Cited
US2021276A
Cited
US2265070A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-24 | 1953-04-25 | 1953-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-24 | 1957-04-25 | 1957-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-24 | 1961-04-25 | 1961-10-25 | $7700.00 | Window Closed / Lapsed |