US2573097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epstein
Assignee: —
•
Filing: —
•
Granted: 1951-10-30
•
Expires: 1968-10-30
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:57
CPC Classifications
D; D06; D06B; D06B11/00; D06B11/002; D06B11/0026; D06B1/00; D06B1/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US590245A
Cited
US1195322A
Cited
US656015A
Cited
US747306A
Cited
US864312A
Cited
US2206611A
Cited
US2310764A
Cited
US2321974A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-29 | 1955-04-30 | 1955-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-29 | 1959-04-30 | 1959-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-29 | 1963-04-30 | 1963-10-30 | $7700.00 | Window Closed / Lapsed |