US2582272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Specialties Development Corp
•
Filing: 1947-09-20
•
Granted: 1952-01-15
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Expires: 1967-09-20
Abstract
No abstract record available.
Inventors
- 👤 Jr Clarence T Pamp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:42
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/44; B01D29/46; B01D33/00; B01D33/06; B01D33/067; B01D33/073; B01D33/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US664572A
Cited
US1793583A
Cited
US1849582A
Cited
US2365525A
Cited
US2455486A
Cited
US2522502A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-14 | 1955-07-16 | 1956-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-14 | 1959-07-16 | 1960-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-14 | 1963-07-16 | 1964-01-15 | $7700.00 | Window Closed / Lapsed |