Patent US246773A successfully refreshed from Google Patents.
US246773A
Expired / Lapsed
US
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System of condensation for pumping-engines
Assignee: —
•
Filing: —
•
Granted: 1881-09-06
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Expires: 1898-09-06
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 02:52
CPC Classifications
F; F28; F28F; F28F27/00; F28F27/02; F28D; F28D21/00; F28D21/0001; F28D21/0003; Y; Y10; Y10S; Y10S165/00; Y10S165/092; Y10S165/109; Y10S165/12; Y10S165/122
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) | 1884-09-05 | 1885-03-07 | 1885-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1888-09-05 | 1889-03-07 | 1889-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1892-09-05 | 1893-03-07 | 1893-09-06 | $7700.00 | Window Closed / Lapsed |