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US904172A
Expired / Lapsed
US
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Apparatus for therapeutic treatment of the air of living-rooms.
Assignee: Individual
•
Filing: 1906-03-10
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Granted: 1908-11-17
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Expires: 1926-03-10
Abstract
No abstract record available.
Inventors
- 👤 Frank Batter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:43
CPC Classifications
A; A61; A61G; A61G10/00; A61G10/02; A61G10/023; A61G10/026
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) | 1911-11-17 | 1912-05-18 | 1912-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-11-17 | 1916-05-18 | 1916-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-11-17 | 1920-05-18 | 1920-11-17 | $7700.00 | Window Closed / Lapsed |