Patent US760182A successfully refreshed from Google Patents.
US760182A
Expired / Lapsed
US
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Ventilating device.
Assignee: Individual
•
Filing: 1903-06-29
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Granted: 1904-05-17
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Expires: 1923-06-29
Abstract
No abstract record available.
Inventors
- 👤 Samuel E Chapman
- 👤 Benjamin A Osborn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:46
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/08; F24F13/10; F24F13/14; F24F13/1426
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) | 1907-05-17 | 1907-11-16 | 1908-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1911-05-17 | 1911-11-16 | 1912-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1915-05-17 | 1915-11-16 | 1916-05-17 | $7700.00 | Window Closed / Lapsed |