Patent US39709A successfully refreshed from Google Patents.
US39709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Benjamin t
Assignee: —
•
Filing: —
•
Granted: 1863-09-01
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Expires: 1880-09-01
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:40
CPC Classifications
F; F28; F28D; F28D7/00; F28D7/02; F28D7/024; Y; Y10; Y10S; Y10S162/00; Y10S162/90; Y10S162/904; Y10S165/00; Y10S165/355; Y10S165/40; Y10S165/427; Y10S165/432
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) | 1866-08-31 | 1867-03-02 | 1867-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1870-08-31 | 1871-03-02 | 1871-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1874-08-31 | 1875-03-02 | 1875-09-01 | $7700.00 | Window Closed / Lapsed |