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Patent US1117601A successfully refreshed from Google Patents.
US1117601A
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Assignee: GENERAL FILTRATION COMPANY Inc
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Filing: 1913-05-09
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Granted: 1914-11-17
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Expires: 1933-05-09
Abstract
No abstract record available.
Inventors
- 👤 James Edward Porter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:43
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/02; B01D39/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1917-11-16 | 1918-05-18 | 1918-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1921-11-16 | 1922-05-18 | 1922-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1925-11-16 | 1926-05-18 | 1926-11-17 | $7700.00 | Window Closed / Lapsed |