Patent US1428633A successfully refreshed from Google Patents.
US1428633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fertilizer material and process of producing same
Assignee: Individual
•
Filing: 1918-04-23
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Granted: 1922-09-12
•
Expires: 1938-04-23
Abstract
No abstract record available.
Inventors
- 👤 Addison F Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:56
CPC Classifications
C; C05; C05D; C05D9/00; C05D9/02; C05F; C05F7/00; C05F7/005; Y; Y10; Y10S; Y10S423/00; Y10S423/01; Y10S423/02
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) | 1925-09-11 | 1926-03-13 | 1926-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-09-11 | 1930-03-13 | 1930-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-09-11 | 1934-03-13 | 1934-09-12 | $7700.00 | Window Closed / Lapsed |