US2563216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boiler tube gauge
Assignee: Individual
•
Filing: 1947-05-27
•
Granted: 1951-08-07
•
Expires: 1967-05-27
Abstract
No abstract record available.
Inventors
- 👤 Allan L Dale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:51
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1708354A
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US2074753A
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US2109976A
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US2150070A
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US2217509A
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US2235533A
Cited
US2322343A
Cited
US2324865A
Cited
US2340987A
Cited
US2445068A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-06 | 1955-02-05 | 1955-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-06 | 1959-02-05 | 1959-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-06 | 1963-02-05 | 1963-08-07 | $7700.00 | Window Closed / Lapsed |