US2671322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separator
Assignee: Individual
•
Filing: 1950-10-16
•
Granted: 1954-03-09
•
Expires: 1970-10-16
Abstract
No abstract record available.
Inventors
- 👤 Arthur F Barry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:30
CPC Classifications
B; B01; B01D; B01D5/00; B01D5/0033; B01D5/0045; B01D5/0078; B01D5/009; Y; Y10; Y10S; Y10S585/00; Y10S585/949; Y10S585/95
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US671810A
Cited
US1946195A
Cited
US2151248A
Cited
US2212143A
Cited
US2242173A
Cited
US2245028A
Cited
US2306553A
Cited
US2551399A
Cited
US2553469A
Cited
US2528028A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-08 | 1957-09-07 | 1958-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-08 | 1961-09-07 | 1962-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-08 | 1965-09-07 | 1966-03-09 | $7700.00 | Window Closed / Lapsed |