US3520244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suspension for convection tube
Assignee: Pan American Hydroponics Inc
•
Filing: 1968-05-31
•
Granted: 1970-07-14
•
Expires: 1988-05-31
Abstract
No abstract record available.
Inventors
- 👤 Floyd C Gaines Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:30
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/02; F24F13/06; F24F13/068; F16; F16L; F16L3/00; F24F13/0218; F24F13/0254; F24F2013/0608
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2222497A
Cited
US3357088A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-13 | 1974-01-12 | 1974-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-13 | 1978-01-12 | 1978-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-13 | 1982-01-12 | 1982-07-14 | $7700.00 | Window Closed / Lapsed |