US2517626A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hollow repair device for leaky boiler tubes
Assignee: Individual
•
Filing: 1947-09-20
•
Granted: 1950-08-08
•
Expires: 1967-09-20
Abstract
No abstract record available.
Inventors
- 👤 Berg Solomon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:56
CPC Classifications
F; F28; F28F; F28F11/00; F28F11/04; F16; F16L; F16L55/00; F16L55/10; F16L55/12; F16L55/128; F16L55/132
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US705059A
Cited
US739489A
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US775124A
Cited
US857582A
Cited
US932766A
Cited
US922544A
Cited
GB191306637A
Cited
US1788845A
Cited
US2374947A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-07 | 1954-02-06 | 1954-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-07 | 1958-02-06 | 1958-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-07 | 1962-02-06 | 1962-08-08 | $7700.00 | Window Closed / Lapsed |