US3431887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for coating articles in a fluidized bed
Assignee: Polysar Ltd
•
Filing: 1963-11-13
•
Granted: 1969-03-11
•
Expires: 1983-11-13
Abstract
No abstract record available.
Inventors
- 👤 Carl K Pettigrew
- 👤 Michael C Siminski Jr
- 👤 Donald F Swavely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:01
CPC Classifications
B; B05; B05C; B05C19/00; B05C19/02; B05C19/06; Y; Y10; Y10S; Y10S118/00; Y10S118/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1656977A
Cited
US2235445A
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US2824029A
Cited
US3136650A
Cited
US3262420A
Cited
US3247004A
Cited
US3261707A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-10 | 1972-09-09 | 1973-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-10 | 1976-09-09 | 1977-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-10 | 1980-09-09 | 1981-03-11 | $7700.00 | Window Closed / Lapsed |