US2330236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for measuring gas leakage
Assignee: Individual
•
Filing: 1942-07-08
•
Granted: 1943-09-28
•
Expires: 1962-07-08
Abstract
No abstract record available.
Inventors
- 👤 Melville F Peters
- 👤 John P Boston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:54
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/26; G01M3/28; G01M3/2876
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) | 1946-09-27 | 1947-03-29 | 1947-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-09-27 | 1951-03-29 | 1951-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-09-27 | 1955-03-29 | 1955-09-28 | $7700.00 | Window Closed / Lapsed |