US2569748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Strainer apparatus
Assignee: Individual
•
Filing: 1946-08-22
•
Granted: 1951-10-02
•
Expires: 1966-08-22
Abstract
No abstract record available.
Inventors
- 👤 Grave Thomas De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:18
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/117; B01D29/44; B01D29/46; B01D29/60; B01D29/606; B01D29/62; B01D29/66; B01D29/70; B01D2201/00; B01D2201/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US765182A
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US1150910A
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US1273656A
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US2184177A
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US2066479A
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US2006405A
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US2100266A
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US2217751A
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US2197971A
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US2383672A
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US2429417A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-01 | 1955-04-02 | 1955-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-01 | 1959-04-02 | 1959-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-01 | 1963-04-02 | 1963-10-02 | $7700.00 | Window Closed / Lapsed |