Patent US741396A successfully refreshed from Google Patents.
US741396A
Expired / Lapsed
US
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Production of nitrogen compounds.
Assignee: WILLSON LABORATORY Co
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Filing: 1896-01-23
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Granted: 1903-10-13
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Expires: 1916-01-23
Abstract
No abstract record available.
Inventors
- 👤 Guillaume De Chalmot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:13
CPC Classifications
C; C01; C01C; C01C1/00; C01C1/02; C01C1/04; C01C1/0405; C01C1/0411
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) | 1906-10-12 | 1907-04-13 | 1907-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1910-10-12 | 1911-04-13 | 1911-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1914-10-12 | 1915-04-13 | 1915-10-13 | $7700.00 | Window Closed / Lapsed |