US2530283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter
Assignee: Individual
•
Filing: 1945-10-05
•
Granted: 1950-11-14
•
Expires: 1965-10-05
Abstract
No abstract record available.
Inventors
- 👤 Bertram G Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:24
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US568874A
Cited
US1352961A
Cited
US2374756A
Cited
US630363A
Cited
US629941A
Cited
US633368A
Cited
US664280A
Cited
US847537A
Cited
US1225993A
Cited
US1179157A
Cited
US1394762A
Cited
US1331237A
Cited
US1455136A
Cited
US1438983A
Cited
US1483285A
Cited
US1704634A
Cited
US1630504A
Cited
US1913542A
Cited
US2355822A
Cited
US2313343A
Cited
US2313344A
Cited
US2327184A
Cited
US2382560A
Cited
US2352269A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-13 | 1954-05-15 | 1954-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-13 | 1958-05-15 | 1958-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-13 | 1962-05-15 | 1962-11-14 | $7700.00 | Window Closed / Lapsed |