Patent US2455023A successfully refreshed from Google Patents.
US2455023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: —
•
Filing: —
•
Granted: 1948-11-30
•
Expires: 1965-11-30
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:45
CPC Classifications
—
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE359872C
Cited
US757389A
Cited
US959632A
Cited
US1172142A
Cited
US1225073A
Cited
US1744150A
Cited
GB323308A
Cited
GB377196A
Cited
US2015519A
Cited
US2265371A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-30 | 1952-05-31 | 1952-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-30 | 1956-05-31 | 1956-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-30 | 1960-05-31 | 1960-11-30 | $7700.00 | Window Closed / Lapsed |