Patent US1429949A successfully refreshed from Google Patents.
US1429949A
Expired / Lapsed
US
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Tank-testing apparatus
Assignee: Individual
•
Filing: 1921-06-11
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Granted: 1922-09-26
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Expires: 1941-06-11
Abstract
No abstract record available.
Inventors
- 👤 Frederick A Jacobs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:02
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/26; G01M3/32; G01M3/3236
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1925-09-25 | 1926-03-27 | 1926-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-09-25 | 1930-03-27 | 1930-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-09-25 | 1934-03-27 | 1934-09-26 | $7700.00 | Window Closed / Lapsed |