US1282908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fixed selective stethoscope.
Assignee: Individual
•
Filing: 1918-02-14
•
Granted: 1918-10-29
•
Expires: 1938-02-14
Abstract
No abstract record available.
Inventors
- 👤 Frank E Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:15
CPC Classifications
A; A61; A61B; A61B7/00; A61B7/003
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) | 1921-10-28 | 1922-04-29 | 1922-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1925-10-28 | 1926-04-29 | 1926-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1929-10-28 | 1930-04-29 | 1930-10-29 | $7700.00 | Window Closed / Lapsed |