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US2354150A
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Assignee: Individual
•
Filing: 1941-09-13
•
Granted: 1944-07-18
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Expires: 1961-09-13
Abstract
No abstract record available.
Inventors
- 👤 Ralph L Skinner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:35
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/50; B01D29/52; B01D29/62; B01D29/64; B01D29/6407; B01D29/6415; B01D29/70; B01D2201/00; B01D2201/04; B01D2201/043; B01D2201/0453
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1947-07-18 | 1948-01-17 | 1948-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-07-18 | 1952-01-17 | 1952-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-07-18 | 1956-01-17 | 1956-07-18 | $7700.00 | Window Closed / Lapsed |