Patent US3434527A successfully refreshed from Google Patents.
US3434527A
Expired / Lapsed
US
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Method for ultra-high purity precision casting
Assignee: Allis Chalmers Corp
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Filing: 1966-01-06
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Granted: 1969-03-25
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Expires: 1986-01-06
Abstract
No abstract record available.
Inventors
- 👤 Edward L Bedell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:32
CPC Classifications
C; C30; C30B; C30B11/00; C30B11/002; B; B22; B22D; B22D18/00; B22D18/06; B22D27/00; B22D27/04; B22D27/045; Y; Y10; Y10S; Y10S266/00; Y10S266/905
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2334701A
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US2716790A
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AT187633B
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US2903759A
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US2842820A
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US2804664A
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US2959829A
Cited
US3314116A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |