US205153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in steam water-heaters
Assignee: —
•
Filing: —
•
Granted: 1878-06-18
•
Expires: 1895-06-18
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:20
CPC Classifications
F; F28; F28D; F28D7/00; F28D7/02; F28D7/024; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/40; Y10S165/427; Y10S165/436; Y10S165/437; Y10S165/438
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) | 1881-06-17 | 1881-12-17 | 1882-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1885-06-17 | 1885-12-17 | 1886-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1889-06-17 | 1889-12-17 | 1890-06-18 | $7700.00 | Window Closed / Lapsed |