Patent US942666A successfully refreshed from Google Patents.
US942666A
Expired / Lapsed
US
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Air vessel for water-supply pipes.
Assignee: Individual
•
Filing: 1907-10-03
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Granted: 1909-12-07
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Expires: 1927-10-03
Abstract
No abstract record available.
Inventors
- 👤 Karl Romstaedt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:44
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/04; F16L55/045; F16L55/05; F16L55/052; F16K; F16K15/00; F16K15/02; F16K15/04; F16K15/042; F16K2200/00; F16K2200/20; F16K2200/204; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3115; Y10T137/3118; Y10T137/7722; Y10T137/7837; Y10T137/7847; Y10T137/7848; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/791
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) | 1912-12-06 | 1913-06-07 | 1913-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-12-06 | 1917-06-07 | 1917-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-12-06 | 1921-06-07 | 1921-12-07 | $7700.00 | Window Closed / Lapsed |