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US844958A
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Steam-trap.
Assignee: Individual
•
Filing: 1906-11-02
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Granted: 1907-02-19
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Expires: 1926-11-02
Abstract
No abstract record available.
Inventors
- 👤 Alfred Leander Riggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:05
CPC Classifications
F; F16; F16T; F16T1/00; F16T1/12; F16T1/14; B; B67; B67D; B67D7/00; B67D7/06; B67D7/38; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3021; Y10T137/3024; Y10T137/304; Y10T137/3052; Y10T137/3068; Y10T137/7287; Y10T137/7313; Y10T137/7316; Y10T137/7319; Y10T137/7358; Y10T137/7381; Y10T137/7387; Y10T137/8158
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) | 1910-02-18 | 1910-08-20 | 1911-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1914-02-18 | 1914-08-20 | 1915-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1918-02-18 | 1918-08-20 | 1919-02-19 | $7700.00 | Window Closed / Lapsed |