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US2642186A
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Assignee: Individual
•
Filing: 1950-11-30
•
Granted: 1953-06-16
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Expires: 1970-11-30
Abstract
No abstract record available.
Inventors
- 👤 Garland Charles Samuel
- 👤 Rogers Francis Heron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:41
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/44; B01D29/46; B01D29/48; B01D29/50; B01D29/52; B01D29/62; B01D29/64; B01D29/6407; B01D29/6415; B01D29/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-15 | 1956-12-15 | 1957-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-15 | 1960-12-15 | 1961-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-15 | 1964-12-15 | 1965-06-16 | $7700.00 | Window Closed / Lapsed |