Patent US2705440A successfully refreshed from Google Patents.
US2705440A
Expired / Lapsed
US
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Slit mechanism for monochromator
Assignee: Beckman Coulter Inc
•
Filing: 1949-10-08
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Granted: 1955-04-05
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Expires: 1969-10-08
Abstract
No abstract record available.
Inventors
- 👤 Kenyon P George
- 👤 Michael E Stickney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:48
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/02; G01J3/04; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20006; Y10T74/20396; Y10T74/20474
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1455825A
Cited
US664415A
Cited
US714106A
Cited
US1003536A
Cited
US1235622A
Cited
US1378936A
Cited
US1453471A
Cited
US1759580A
Cited
US1848888A
Cited
US2021232A
Cited
US2225714A
Cited
US2265103A
Cited
US2352043A
Cited
US2408512A
Cited
US2485089A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-04-04 | 1958-10-04 | 1959-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-04 | 1962-10-04 | 1963-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-04 | 1966-10-04 | 1967-04-05 | $7700.00 | Window Closed / Lapsed |