US3428973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluidized supporting apparatus
Assignee: Individual
•
Filing: 1966-03-17
•
Granted: 1969-02-25
•
Expires: 1986-03-17
Abstract
No abstract record available.
Inventors
- 👤 Thomas S Hargest
- 👤 Curtis P Artz
- 👤 Charles D Thompson
- 👤 Truman G Blocker Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:42
CPC Classifications
A; A61; A61G; A61G7/00; A61G7/05; A61G7/057; A61G7/05738; A61G7/05746; Y; Y10; Y10S; Y10S297/00; Y10S297/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US40024A
Cited
US2462984A
Cited
US2668365A
Cited
GB932779A
Cited
US3108293A
Cited
US3214844A
Cited
US3277582A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |