US2897631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for soilless plant cultivation
Assignee: FIRST STATE BANK OF DENTON
•
Filing: 1957-03-22
•
Granted: 1959-08-04
•
Expires: 1977-03-22
Abstract
No abstract record available.
Inventors
- 👤 Jr Louis Albert Howsley
- 👤 Malone Roger Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:11
CPC Classifications
A; A01; A01G; A01G31/00; A01G31/02; A01G31/06; Y; Y02; Y02P; Y02P60/00; Y02P60/20; Y02P60/21; Y10; Y10T; Y10T137/00; Y10T137/2713; Y10T137/272; Y10T137/2774
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |