US3373737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light control for diagnostic instruments
Assignee: Welch Allyn Inc
•
Filing: 1965-09-28
•
Granted: 1968-03-19
•
Expires: 1985-09-28
Abstract
No abstract record available.
Inventors
- 👤 William C Moore
- 👤 John D Connors
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:29
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/227; Y; Y10; Y10S; Y10S362/00; Y10S362/804
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US625354A
Cited
US1516133A
Cited
GB423957A
Cited
DE646885C
Cited
DE620007C
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US2385640A
Cited
US2607883A
Cited
US2736792A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |