Patent US2544545A successfully refreshed from Google Patents.
US2544545A
Expired / Lapsed
US
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Assignee: TL Smith Co
•
Filing: 1948-12-11
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Granted: 1951-03-06
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Expires: 1968-12-11
Abstract
No abstract record available.
Inventors
- 👤 George A Rockburg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:10
CPC Classifications
B; B28; B28C; B28C5/00; B28C5/42; B28C5/4203; B28C5/4262
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2167669A
Cited
US2289274A
Cited
US2265751A
Cited
US2265752A
Cited
US2360345A
Cited
US2374912A
Cited
US2454940A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-05 | 1954-09-04 | 1955-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-05 | 1958-09-04 | 1959-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-05 | 1962-09-04 | 1963-03-06 | $7700.00 | Window Closed / Lapsed |