US2850664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grid structure
Assignee: Machlett Laboratories Inc
•
Filing: 1954-05-07
•
Granted: 1958-09-02
•
Expires: 1974-05-07
Abstract
No abstract record available.
Inventors
- 👤 Eugene J Naill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:04
CPC Classifications
H; H01; H01J; H01J21/00; H01J21/36; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/2937; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2262455A
Cited
US2323985A
Cited
US2425980A
Cited
US2402119A
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US2521545A
Cited
US2461303A
Cited
US2701320A
Cited
US2680824A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |