US1340708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fertilizer and process for the manufacture of the same
Assignee: Norsk Hydro Elektrisk Kvaelstof AS
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Filing: 1920-02-06
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Granted: 1920-05-18
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Expires: 1940-02-06
Abstract
No abstract record available.
Inventors
- 👤 Fjellanger Mikal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:48
CPC Classifications
C; C05; C05C; C05C9/00
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) | 1923-05-18 | 1923-11-17 | 1924-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-05-18 | 1927-11-17 | 1928-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-05-18 | 1931-11-17 | 1932-05-18 | $7700.00 | Window Closed / Lapsed |