US3437803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical cold light illuminating apparatus
Assignee: Quarzlampen GmbH
•
Filing: 1967-10-26
•
Granted: 1969-04-08
•
Expires: 1987-10-26
Abstract
No abstract record available.
Inventors
- 👤 Ernst-Otto Seitz
- 👤 Volker Schafer
- 👤 Juergen F Schafer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:56
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/0001; G02B6/0005; G03; G03B; G03B15/00; G03B15/02; F; F21; F21W; F21W2131/00; F21W2131/20; F21W2131/205; Y; Y10; Y10S; Y10S362/00; Y10S362/804
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1286590A
Cited
US2227861A
Cited
US2802932A
Cited
US3010013A
Cited
US3016785A
Cited
US3278738A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |