Patent US2631369A successfully refreshed from Google Patents.
Patent US1361834A successfully refreshed from Google Patents.
US1361834A
Expired / Lapsed
US
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System of evaporation
Assignee: Individual
•
Filing: 1916-09-16
•
Granted: 1920-12-14
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Expires: 1936-09-16
Abstract
No abstract record available.
Inventors
- 👤 Baufre William L De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:11
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/28; B01D1/2896; B01D1/0082; B01D1/2803; B01D1/2806; B01D1/2809; Y; Y10; Y10S; Y10S203/00; Y10S203/19
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) | 1923-12-14 | 1924-06-14 | 1924-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-12-14 | 1928-06-14 | 1928-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-12-14 | 1932-06-14 | 1932-12-14 | $7700.00 | Window Closed / Lapsed |