Patent US3402506A successfully refreshed from Google Patents.
US3402506A
Expired / Lapsed
US
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Apparatus for growing water plants commercially
Assignee: Individual
•
Filing: 1966-09-19
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Granted: 1968-09-24
•
Expires: 1986-09-19
Abstract
No abstract record available.
Inventors
- 👤 John C Renfro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:26
CPC Classifications
A; A01; A01G; A01G33/00; C; C12; C12M; C12M21/00; C12M21/02; C12M23/00; C12M23/02; C12M23/18; C12M23/48; C12M33/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1252500A
Cited
US1336356A
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US1498760A
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US2283472A
Cited
US2686754A
Cited
US2813507A
Cited
US3155609A
Cited
US3237339A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-24 | 1972-03-25 | 1972-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-24 | 1976-03-25 | 1976-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-24 | 1980-03-25 | 1980-09-24 | $7700.00 | Window Closed / Lapsed |