US2117056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam trap
Assignee: AMERICAN DISTR STEAM Co
•
Filing: 1936-06-24
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Granted: 1938-05-10
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Expires: 1956-06-24
Abstract
No abstract record available.
Inventors
- 👤 Frederick R Dunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:37
CPC Classifications
F; F16; F16T; F16T1/00; F16T1/38; F16T1/383; F16T1/20; F16T1/22; F16T1/24; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3021; Y10T137/304; Y10T137/3052; Y10T137/3068; Y10T137/598; Y10T137/6161; Y10T137/6164; Y10T137/6167; Y10T137/6171; Y10T137/6174; Y10T137/7287; Y10T137/7313; Y10T137/7323; Y10T137/7722; Y10T137/7737
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) | 1941-05-09 | 1941-11-08 | 1942-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-05-09 | 1945-11-08 | 1946-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-05-09 | 1949-11-08 | 1950-05-10 | $7700.00 | Window Closed / Lapsed |