US979540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for condensing steam.
Assignee: Individual
•
Filing: 1910-03-19
•
Granted: 1910-12-27
•
Expires: 1930-03-19
Abstract
No abstract record available.
Inventors
- 👤 Donald Barns Morison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:31
CPC Classifications
F; F28; F28B; F28B1/00; F28B1/02; Y; Y10; Y10S; Y10S165/00; Y10S165/184; Y10S165/202; Y10S165/203
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) | 1913-12-26 | 1914-06-27 | 1914-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-12-26 | 1918-06-27 | 1918-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-12-26 | 1922-06-27 | 1922-12-27 | $7700.00 | Window Closed / Lapsed |