US3366243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter plate coupling apparatus in a filter press
Assignee: Individual
•
Filing: 1965-12-30
•
Granted: 1968-01-30
•
Expires: 1985-12-30
Abstract
No abstract record available.
Inventors
- 👤 Kurita Kintaro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:47
CPC Classifications
B; B01; B01D; B01D25/00; B01D25/12; B01D25/127; B01D25/172
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE532720A
Cited
US1308943A
Cited
US2091623A
Cited
DE1144689B
Cited
US3289844A
Cited
US3232435A
Cited
US3333702A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-29 | 1971-07-31 | 1972-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-29 | 1975-07-31 | 1976-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-29 | 1979-07-31 | 1980-01-30 | $7700.00 | Window Closed / Lapsed |