Patent US97439A successfully refreshed from Google Patents.
US97439A
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Improved composition for clbahing millstombs
Assignee: —
•
Filing: —
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Granted: 1869-11-30
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Expires: 1886-11-30
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:22
CPC Classifications
C; C11; C11D; C11D2111/00; C11D2111/10; C11D2111/14; C11D2111/24
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) | 1872-11-29 | 1873-05-31 | 1873-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1876-11-29 | 1877-05-31 | 1877-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1880-11-29 | 1881-05-31 | 1881-11-30 | $7700.00 | Window Closed / Lapsed |