Patent US2725612A successfully refreshed from Google Patents.
US2725612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lipski
Assignee: —
•
Filing: —
•
Granted: 1955-12-06
•
Expires: 1972-12-06
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:14
CPC Classifications
B; B28; B28B; B28B23/00; B28B23/02; B28B23/04; E; E04; E04C; E04C3/00; E04C3/02; E04C3/20; E04C3/26; E04C3/29; E04C3/293
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB144193A
Cited
US1728265A
Cited
US1652056A
Cited
US2080074A
Cited
US1836197A
Cited
US2153741A
Cited
US2299070A
Cited
US2382139A
Cited
US2319105A
Cited
US2611944A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-05 | 1959-06-06 | 1959-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-05 | 1963-06-06 | 1963-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-05 | 1967-06-06 | 1967-12-06 | $7700.00 | Window Closed / Lapsed |