US2833345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spray drying apparatus
Assignee: Saint Gobain Abrasives Inc
•
Filing: 1953-05-06
•
Granted: 1958-05-06
•
Expires: 1973-05-06
Abstract
No abstract record available.
Inventors
- 👤 Pyl Edward Van Der
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:58
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/16; B01D1/18; Y; Y10; Y10S; Y10S159/00; Y10S159/23
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US726442A
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US772496A
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US954451A
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US1757573A
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US1471765A
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US1779551A
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US1597033A
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US1779516A
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US2561394A
Cited
US2564060A
Cited
US2595114A
Cited
US2566229A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |