US1327494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Auxiliary air-valve
Assignee: Individual
•
Filing: 1918-11-14
•
Granted: 1920-01-06
•
Expires: 1938-11-14
Abstract
No abstract record available.
Inventors
- 👤 Wilson E Sims
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:02
CPC Classifications
F; F02; F02M; F02M23/00; F02M23/04; F02M23/08; F02M23/09; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7748; Y10T137/7749; Y10T137/7837; Y10T137/7897; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7934
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) | 1923-01-05 | 1923-07-07 | 1924-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-01-05 | 1927-07-07 | 1928-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-01-05 | 1931-07-07 | 1932-01-06 | $7700.00 | Window Closed / Lapsed |