Patent US840446A successfully refreshed from Google Patents.
US840446A
Expired / Lapsed
US
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Propelling endless aprons for conveyors and for feeding machinery.
Assignee: Individual
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Filing: 1902-07-26
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Granted: 1907-01-01
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Expires: 1922-07-26
Abstract
No abstract record available.
Inventors
- 👤 Philip H Ertheiler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:08
CPC Classifications
B; B65; B65G; B65G47/00; B65G47/52; B65G23/00; B65G23/02; B65G23/04; B65G2201/00; B65G2201/02
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) | 1909-12-31 | 1910-07-02 | 1911-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-12-31 | 1914-07-02 | 1915-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-12-31 | 1918-07-02 | 1919-01-01 | $7700.00 | Window Closed / Lapsed |