Patent US2436077A successfully refreshed from Google Patents.
US2436077A
Expired / Lapsed
US
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Portable liquid filtering apparatus
Assignee: TITEFLEX Inc
•
Filing: 1944-05-13
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Granted: 1948-02-17
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Expires: 1964-05-13
Abstract
No abstract record available.
Inventors
- 👤 Edwin A Robertson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:00
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/10; F04B53/1037; C; C02; C02F; C02F1/00; C02F1/001; C02F1/003; C02F2201/00; C02F2201/002; C02F2201/006
Claims Analysis
Total Claims: 0
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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) | 1951-02-16 | 1951-08-18 | 1952-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-16 | 1955-08-18 | 1956-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-16 | 1959-08-18 | 1960-02-17 | $7700.00 | Window Closed / Lapsed |