Patent US915780A successfully refreshed from Google Patents.
US915780A
Expired / Lapsed
US
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Steam-trap.
Assignee: Individual
•
Filing: 1907-08-07
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Granted: 1909-03-23
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Expires: 1927-08-07
Abstract
No abstract record available.
Inventors
- 👤 Alexander Malcolm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:19
CPC Classifications
E; E03; E03D; E03D1/00; E03D1/02; E03D1/16; E03D1/165; Y; Y10; Y10T; Y10T137/00; Y10T137/2713; Y10T137/2774; Y10T137/2795; Y10T137/2931; Y10T137/3003; Y10T137/3021; Y10T137/304; Y10T137/3052; Y10T137/3068; Y10T137/7287; Y10T137/7313; Y10T137/7316; Y10T137/7319; Y10T137/7358; Y10T137/7423; Y10T137/7426; Y10T137/7436; Y10T137/7439; Y10T137/7488
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) | 1912-03-22 | 1912-09-21 | 1913-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-03-22 | 1916-09-21 | 1917-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-03-22 | 1920-09-21 | 1921-03-23 | $7700.00 | Window Closed / Lapsed |