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Patent US804977A successfully refreshed from Google Patents.
US804977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grain heater and drier.
Assignee: Individual
•
Filing: 1905-06-26
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Granted: 1905-11-21
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Expires: 1925-06-26
Abstract
No abstract record available.
Inventors
- 👤 Peter Provost
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:56
CPC Classifications
F; F28; F28F; F28F1/00; F28F1/02; F28F1/022
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) | 1908-11-20 | 1909-05-22 | 1909-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1912-11-20 | 1913-05-22 | 1913-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1916-11-20 | 1917-05-22 | 1917-11-21 | $7700.00 | Window Closed / Lapsed |