Patent US3650692A successfully refreshed from Google Patents.
Patent US3400824A successfully refreshed from Google Patents.
US3400824A
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Filtering apparatus for used cooking oils
Assignee: MCDONALDS SYSTEM Inc
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Filing: 1966-11-14
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Granted: 1968-09-10
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Expires: 1986-11-14
Abstract
No abstract record available.
Inventors
- 👤 Ralph E Weimer
- 👤 Charles E Fallis
- 👤 Jr Frank Yud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:11
CPC Classifications
B; B01; B01D; B01D37/00; A; A47; A47J; A47J37/00; A47J37/12; A47J37/1223; B01D29/00; B01D29/01; B01D29/05; B01D29/055; B01D29/88; B01D29/92; B01D29/96; Y; Y10; Y10S; Y10S210/00; Y10S210/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-10 | 1972-03-11 | 1972-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-10 | 1976-03-11 | 1976-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-10 | 1980-03-11 | 1980-09-10 | $7700.00 | Window Closed / Lapsed |