US2691339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic pressure control of sugar cane mills
Assignee: Edwards Engineering Corp
•
Filing: 1949-10-12
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Granted: 1954-10-12
•
Expires: 1969-10-12
Abstract
No abstract record available.
Inventors
- 👤 Joseph N Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:28
CPC Classifications
C; C13; C13B; C13B10/00; C13B10/02; C13B10/06; Y; Y10; Y10S; Y10S60/00; Y10S60/907
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US974349A
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US2331921A
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US2385016A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-11 | 1958-04-12 | 1958-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-11 | 1962-04-12 | 1962-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-11 | 1966-04-12 | 1966-10-12 | $7700.00 | Window Closed / Lapsed |