US2603354A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for obtaining
Assignee: —
•
Filing: —
•
Granted: 1952-07-15
•
Expires: 1969-07-15
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:55
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/01; B01D29/50; B01D29/52; B01D29/56; B01D29/62; B01D29/64; B01D29/6438; B01D29/6453; B01D29/66; B01D29/68; B01D29/684; B01D29/88; B01D29/90; B01D29/902; B01D29/904; B01D2201/00; B01D2201/18; B01D2201/188; B01D2201/28; B01D2201/287
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-15 | 1956-01-14 | 1956-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-15 | 1960-01-14 | 1960-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-15 | 1964-01-14 | 1964-07-15 | $7700.00 | Window Closed / Lapsed |