US3544220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical instruments
Assignee: W-J (DELAWARE) Inc
•
Filing: 1965-11-05
•
Granted: 1970-12-01
•
Expires: 1985-11-05
Abstract
No abstract record available.
Inventors
- 👤 Morton Kaye
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:04
CPC Classifications
G; G01; G01M; G01M11/00; G01M11/02; G01M11/0242; G01M11/0257; G01M11/0264; A; A61; A61B; A61B3/00; A61B3/10; A61B3/107; A61B3/13; G01B; G01B11/00; G01B11/24; G01B11/255
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-30 | 1974-06-01 | 1974-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-30 | 1978-06-01 | 1978-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-30 | 1982-06-01 | 1982-12-01 | $7700.00 | Window Closed / Lapsed |