US2418973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thickener
Assignee: Hardinge Inc
•
Filing: 1942-02-18
•
Granted: 1947-04-15
•
Expires: 1962-02-18
Abstract
No abstract record available.
Inventors
- 👤 Hardinge Harlowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:27
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/02; B01D21/04; B01D21/06; B01D21/18; B01D21/20; B01D21/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2126884A
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US2295943A
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US2265046A
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US2286397A
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US2262412A
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US2253535A
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US2239194A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-04-14 | 1950-10-14 | 1951-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-04-14 | 1954-10-14 | 1955-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-04-14 | 1958-10-14 | 1959-04-15 | $7700.00 | Window Closed / Lapsed |