US2582340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Purolator Products Inc
•
Filing: 1948-03-25
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Granted: 1952-01-15
•
Expires: 1968-03-25
Abstract
No abstract record available.
Inventors
- 👤 Ralph R Layte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:57
CPC Classifications
B; B29; B29C; B29C67/00; B29C67/0003; B01; B01D; B01D29/00; B01D29/11; B01D29/111; B01D29/13; B01D29/15; B01D29/44; B01D29/48; B01D39/00; B01D39/14; B01D39/16; B01D39/1692; Y; Y10; Y10S; Y10S264/00; Y10S264/40
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) | 1955-01-14 | 1955-07-16 | 1956-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-14 | 1959-07-16 | 1960-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-14 | 1963-07-16 | 1964-01-15 | $7700.00 | Window Closed / Lapsed |