US1159862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace.
Assignee: Westinghouse Machine Co
•
Filing: 1915-02-16
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Granted: 1915-11-09
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Expires: 1935-02-16
Abstract
No abstract record available.
Inventors
- 👤 Oscar P Ostergren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:09
CPC Classifications
F; F23; F23K; F23K3/00; F23K3/10; F23K3/12
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) | 1918-11-08 | 1919-05-10 | 1919-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1922-11-08 | 1923-05-10 | 1923-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1926-11-08 | 1927-05-10 | 1927-11-09 | $7700.00 | Window Closed / Lapsed |