Patent US1257209A successfully refreshed from Google Patents.
US1257209A
Expired / Lapsed
US
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Evaporating-tank.
Assignee: Atlas Powder Co
•
Filing: 1916-04-13
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Granted: 1918-02-19
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Expires: 1936-04-13
Abstract
No abstract record available.
Inventors
- 👤 William E Fletcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:40
CPC Classifications
B; B01; B01D; B01D1/00; Y; Y10; Y10S; Y10S165/00; Y10S165/917
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) | 1921-02-18 | 1921-08-20 | 1922-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1925-02-18 | 1925-08-20 | 1926-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1929-02-18 | 1929-08-20 | 1930-02-19 | $7700.00 | Window Closed / Lapsed |