US2863564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extensible header for clarification tanks
Assignee: Chain Belt Co
•
Filing: 1956-08-02
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Granted: 1958-12-09
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Expires: 1976-08-02
Abstract
No abstract record available.
Inventors
- 👤 Arthur C Lind
- 👤 Gilbert W Quast
- 👤 Tom J Koeske
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:43
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/0024; B01D21/0003; B01D21/02; B01D21/04; B01D21/06; B01D21/18; B01D21/24; B01D21/2405; B01D21/2427; B01D21/245; B01D21/30; B01D21/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-08 | 1962-06-09 | 1962-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-08 | 1966-06-09 | 1966-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-08 | 1970-06-09 | 1970-12-09 | $7700.00 | Window Closed / Lapsed |