US2567450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fines separation
Assignee: Anderson Co V D
•
Filing: 1948-02-13
•
Granted: 1951-09-11
•
Expires: 1968-02-13
Abstract
No abstract record available.
Inventors
- 👤 Smith Marion Wallace
- 👤 Frederick W Weigel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:22
CPC Classifications
C; C11; C11B; C11B1/00; C11B1/10; C11B1/108; B; B01; B01D; B01D11/00; B01D11/02; B01D11/0215; B01D11/0253; B01D11/0257; B01D21/00; B01D21/0018; B01D21/0039; B01D21/0051; B01D21/02; B01D21/24; B01D21/2427; B01D21/245; B01D21/2461; C11B1/102
Claims Analysis
Total Claims: 0
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US2428756A
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US2468069A
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US2468597A
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US2441200A
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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) | 1954-09-10 | 1955-03-12 | 1955-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-10 | 1959-03-12 | 1959-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-10 | 1963-03-12 | 1963-09-11 | $7700.00 | Window Closed / Lapsed |