US2192155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and means for locating leaks in a gas main or the like
Assignee: Individual
•
Filing: 1937-04-02
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Granted: 1940-02-27
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Expires: 1957-04-02
Abstract
No abstract record available.
Inventors
- 👤 Elmer F Schuldt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:06
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/005; F; F16; F16K; F16K7/00; F16K7/10; G01M3/02; G01M3/26; G01M3/28; G01M3/2853; F16L; F16L2101/00; F16L2101/30
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) | 1943-02-26 | 1943-08-28 | 1944-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-02-26 | 1947-08-28 | 1948-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-02-26 | 1951-08-28 | 1952-02-27 | $7700.00 | Window Closed / Lapsed |