Patent US3033373A successfully refreshed from Google Patents.
US3033373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter cloth fastening means
Assignee: Individual
•
Filing: 1959-07-01
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Granted: 1962-05-08
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Expires: 1979-07-01
Abstract
No abstract record available.
Inventors
- 👤 Mueller Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:47
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/15; B01D33/17; B01D2201/00; B01D2201/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1323421A
Cited
DE291316C
Cited
US1932117A
Cited
US2737300A
Cited
US2772000A
Cited
US2731156A
Cited
US2765083A
Cited
US2902164A
Cited
US2863561A
Cited
US2946447A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-07 | 1965-11-06 | 1966-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-07 | 1969-11-06 | 1970-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-07 | 1973-11-06 | 1974-05-08 | $7700.00 | Window Closed / Lapsed |