US2533331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Powder dispensing
Assignee: Linde Air Products Co
•
Filing: 1945-03-01
•
Granted: 1950-12-12
•
Expires: 1965-03-01
Abstract
No abstract record available.
Inventors
- 👤 George M Skinner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:53
CPC Classifications
B; B65; B65G; B65G65/00; B65G65/30; B65G65/34; B65G65/40; B65G65/44; B24; B24C; B24C7/00; B65G53/00; B65G53/04; B65G53/06; B65G53/10; B65G53/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1833853A
Cited
US1843460A
Cited
US2103400A
Cited
US2100878A
Cited
US2187717A
Cited
US2325715A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |