US691722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tobacco-drying system.
Assignee: SALEM IRON WORKS
•
Filing: 1900-07-17
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Granted: 1902-01-21
•
Expires: 1920-07-17
Abstract
No abstract record available.
Inventors
- 👤 Whitley E Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:16
CPC Classifications
A; A24; A24B; A24B3/00; A24B3/04
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) | 1905-01-20 | 1905-07-22 | 1906-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1909-01-20 | 1909-07-22 | 1910-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1913-01-20 | 1913-07-22 | 1914-01-21 | $7700.00 | Window Closed / Lapsed |