US2834473A
Expired / Lapsed
US
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Assignee: Infilco Inc
•
Filing: 1953-02-16
•
Granted: 1958-05-13
•
Expires: 1973-02-16
Abstract
No abstract record available.
Inventors
- 👤 Everett M Battey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:51
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/50; B01D29/52; B01D29/44; B01D29/48; B01D29/62; B01D29/66; B01D2201/00; B01D2201/04; B01D2201/043; B01D2201/0438; B01D37/00; B01D37/02
Claims Analysis
Total Claims: 0
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US2423172A
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US2468603A
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US2519663A
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US2570132A
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US2600458A
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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) | 1961-05-12 | 1961-11-11 | 1962-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-12 | 1965-11-11 | 1966-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-12 | 1969-11-11 | 1970-05-13 | $7700.00 | Window Closed / Lapsed |