US2554090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous bleaching apparatus
Assignee: Greenville Steel & Foundry Co
•
Filing: 1947-06-21
•
Granted: 1951-05-22
•
Expires: 1967-06-21
Abstract
No abstract record available.
Inventors
- 👤 Henry A Dameron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:43
CPC Classifications
D; D06; D06B; D06B3/00; D06B3/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2371166A
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US814124A
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US733408A
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US759980A
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US911560A
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US1564468A
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US1854526A
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US2267718A
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US2304474A
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US2395305A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-21 | 1954-11-20 | 1955-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-21 | 1958-11-20 | 1959-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-21 | 1962-11-20 | 1963-05-22 | $7700.00 | Window Closed / Lapsed |