US907336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recuperator for heating air and gases.
Assignee: Individual
•
Filing: 1906-03-14
•
Granted: 1908-12-22
•
Expires: 1926-03-14
Abstract
No abstract record available.
Inventors
- 👤 Emile Gobbe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:42
CPC Classifications
F; F28; F28F; F28F21/00; F28F21/04; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/442; Y10S165/449; Y10S165/45
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) | 1911-12-22 | 1912-06-22 | 1912-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-12-22 | 1916-06-22 | 1916-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-12-22 | 1920-06-22 | 1920-12-22 | $7700.00 | Window Closed / Lapsed |