US940735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for developing the lungs.
Assignee: Individual
•
Filing: 1908-12-11
•
Granted: 1909-11-23
•
Expires: 1928-12-11
Abstract
No abstract record available.
Inventors
- 👤 Victor J Schaeffer
- 👤 James M Dempsey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:52
CPC Classifications
A; A63; A63B; A63B23/00; A63B23/18
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) | 1912-11-22 | 1913-05-24 | 1913-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-11-22 | 1917-05-24 | 1917-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-11-22 | 1921-05-24 | 1921-11-23 | $7700.00 | Window Closed / Lapsed |