Patent US2852001A successfully refreshed from Google Patents.
Patent US5271A successfully refreshed from Google Patents.
US5271A
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Improvement in preparing india-rubber
Assignee: —
•
Filing: —
•
Granted: 1847-09-04
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Expires: 1864-09-04
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:15
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/34
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) | 1850-09-03 | 1851-03-05 | 1851-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1854-09-03 | 1855-03-05 | 1855-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1858-09-03 | 1859-03-05 | 1859-09-04 | $7700.00 | Window Closed / Lapsed |