US663677A
Expired / Lapsed
US
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Surface condenser.
Assignee: Individual
•
Filing: 1897-09-22
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Granted: 1900-12-11
•
Expires: 1917-09-22
Abstract
No abstract record available.
Inventors
- 👤 Ben M Kirker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:34
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/001; F28F9/002; F28D; F28D3/00; F28D3/02; F25; F25B; F25B39/00; F25B39/04; F28B; F28B1/00; F28B1/06; F28B9/00; F28B9/02; F28B9/08; F28D1/00; F28D1/02; F28D1/04; F28D1/053; F28D1/05316; F28D7/00; F28D7/10; F28D7/12; F28F9/007; F28F9/013; F28F9/0132; F25B2339/00; F25B2339/04; F28D21/00; F28D2021/0019; F28D2021/0061; F28D2021/0063; F28D2021/0068; F28D2021/007; Y; Y10; Y10S; Y10S165/00; Y10S165/163; Y10S165/172; Y10S165/175
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) | 1903-12-11 | 1904-06-11 | 1904-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1907-12-11 | 1908-06-11 | 1908-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1911-12-11 | 1912-06-11 | 1912-12-11 | $7700.00 | Window Closed / Lapsed |