US2589920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: KRALINATOR PRODUCTS Ltd
•
Filing: 1947-12-13
•
Granted: 1952-03-18
•
Expires: 1967-12-13
Abstract
No abstract record available.
Inventors
- 👤 Beckett Ronald Carey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:36
CPC Classifications
F; F16; F16N; F16N39/00; F16N39/06; B; B01; B01D; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D35/00; B01D35/14; B01D35/147
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1002905A
Cited
US1036479A
Cited
US1162153A
Cited
GB316452A
Cited
US2188745A
Cited
GB533576A
Cited
US2454030A
Cited
US2478109A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |