US3446272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic temperature control of greenhouse
Assignee: Pan American Hydroponics Inc
•
Filing: 1967-04-19
•
Granted: 1969-05-27
•
Expires: 1987-04-19
Abstract
No abstract record available.
Inventors
- 👤 Floyd C Gaines Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:31
CPC Classifications
A; A01; A01G; A01G9/00; A01G9/24; A01G9/246; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/25
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3246643A
Cited
US3307469A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-26 | 1972-11-25 | 1973-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-26 | 1976-11-25 | 1977-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-26 | 1980-11-25 | 1981-05-27 | $7700.00 | Window Closed / Lapsed |