Patent US4330497A successfully refreshed from Google Patents.
US887322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fresh-air inlet.
Assignee: Individual
•
Filing: 1906-05-29
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Granted: 1908-05-12
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Expires: 1926-05-29
Abstract
No abstract record available.
Inventors
- 👤 John L Fruin
- 👤 Joseph J Crotty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:37
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/03; F16K15/033; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7898; Y10T137/8158; Y10T137/8359
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) | 1911-05-12 | 1911-11-11 | 1912-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-05-12 | 1915-11-11 | 1916-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-05-12 | 1919-11-11 | 1920-05-12 | $7700.00 | Window Closed / Lapsed |