US3042216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter construction
Assignee: Individual
•
Filing: 1959-02-05
•
Granted: 1962-07-03
•
Expires: 1979-02-05
Abstract
No abstract record available.
Inventors
- 👤 Joshua H Goldman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:07
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/14; B01D39/16; B01D39/18; B01D29/00; B01D29/11; B01D29/111; B01D29/13; B01D29/15; B01D29/21; B01D29/216; B01D29/50; B01D29/56; B01D29/58; B01D39/08; B01D39/083; B01D39/10; B01D39/1607; B01D2239/00; B01D2239/06; B01D2239/065; B01D2239/0654; B01D2239/069; B01D2239/0695
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA502000A
Cited
US1606647A
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US2203815A
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US2421704A
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US2550853A
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US2427733A
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US2609932A
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US2742160A
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US2736433A
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US2829775A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |