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US781107A
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Assignee: Individual
•
Filing: 1903-12-21
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Granted: 1905-01-31
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Expires: 1923-12-21
Abstract
No abstract record available.
Inventors
- 👤 William F Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:18
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/58; B01D33/60; B01D33/06; B01D33/073
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) | 1908-01-31 | 1908-08-01 | 1909-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1912-01-31 | 1912-08-01 | 1913-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1916-01-31 | 1916-08-01 | 1917-01-31 | $7700.00 | Window Closed / Lapsed |