Patent US2935200A successfully refreshed from Google Patents.
US2935200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pan seal for travelling pan filter
Assignee: Dorr Oliver Inc
•
Filing: 1956-06-06
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Granted: 1960-05-03
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Expires: 1976-06-06
Abstract
No abstract record available.
Inventors
- 👤 William A Lutz
- 👤 Pelitti Enrico
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:06
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/333; B01D33/44; B01D33/46; B01D33/463; B01D33/58; B01D33/60; B01D35/00; B01D35/06; B01D2201/00; B01D2201/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US647750A
Cited
US732499A
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US1026917A
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US1491641A
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US1793449A
Cited
US2559615A
Cited
US2570697A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-03 | 1963-11-02 | 1964-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-03 | 1967-11-02 | 1968-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-03 | 1971-11-02 | 1972-05-03 | $7700.00 | Window Closed / Lapsed |