US3384076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Otoscope head
Assignee: Propper Manufacturing Co Inc
•
Filing: 1966-11-14
•
Granted: 1968-05-21
•
Expires: 1986-11-14
Abstract
No abstract record available.
Inventors
- 👤 Irving A Speelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:07
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/227
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1849701A
Cited
US2039546A
Cited
US2678041A
Cited
US2746450A
Cited
US2797684A
Cited
US3146775A
Cited
US3261349A
Cited
US3299884A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |