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US2639549A
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Soilless culture
Assignee: Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
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Filing: 1950-07-24
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Granted: 1953-05-26
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Expires: 1970-07-24
Abstract
No abstract record available.
Inventors
- 👤 Wubben Gerrit Jan Hill Ebbinge
- 👤 Steiner Abram Arie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:19
CPC Classifications
A; A01; A01G; A01G31/00; A01G31/02; Y; Y02; Y02P; Y02P60/00; Y02P60/20; Y02P60/21; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/85954
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2062755A
Cited
US2198150A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-25 | 1956-11-24 | 1957-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-25 | 1960-11-24 | 1961-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-25 | 1964-11-24 | 1965-05-26 | $7700.00 | Window Closed / Lapsed |