US2582410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slit mechanism
Assignee: American Optical Corp
•
Filing: 1949-05-03
•
Granted: 1952-01-15
•
Expires: 1969-05-03
Abstract
No abstract record available.
Inventors
- 👤 Andrew M Bergmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:15
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/02; G01J3/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US272117A
Cited
US1024242A
Cited
US1207271A
Cited
US1742600A
Cited
US2094214A
Cited
GB395920A
Cited
US2408512A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-14 | 1955-07-16 | 1956-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-14 | 1959-07-16 | 1960-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-14 | 1963-07-16 | 1964-01-15 | $7700.00 | Window Closed / Lapsed |