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US49949A
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US
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Improvement in automatic boiler-feeders
Assignee: —
•
Filing: —
•
Granted: 1865-09-12
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Expires: 1882-09-12
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:00
CPC Classifications
F; F22; F22D; F22D5/00; F22D5/02; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/2937; Y10T137/2978; Y10T137/2981
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) | 1868-09-11 | 1869-03-13 | 1869-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1872-09-11 | 1873-03-13 | 1873-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1876-09-11 | 1877-03-13 | 1877-09-12 | $7700.00 | Window Closed / Lapsed |