US642149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coin-released lung-testing apparatus.
Assignee: Individual
•
Filing: 1898-03-22
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Granted: 1900-01-30
•
Expires: 1918-03-22
Abstract
No abstract record available.
Inventors
- 👤 Benjamin Mckenzie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:26
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/08; A61B5/091; A61B5/093
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) | 1903-01-30 | 1903-08-01 | 1904-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1907-01-30 | 1907-08-01 | 1908-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1911-01-30 | 1911-08-01 | 1912-01-31 | $7700.00 | Window Closed / Lapsed |