US3368523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminar flow work station
Assignee: AT&T Inc
•
Filing: 1965-05-13
•
Granted: 1968-02-13
•
Expires: 1985-05-13
Abstract
No abstract record available.
Inventors
- 👤 Edward J Becker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:30
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/22; C23C14/56; B; B01; B01J; B01J3/00; B01J3/006; Y; Y10; Y10S; Y10S55/00; Y10S55/29
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2558997A
Cited
US2724663A
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US2862369A
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US2999448A
Cited
US3038400A
Cited
US3143952A
Cited
US3148956A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-12 | 1971-08-14 | 1972-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-12 | 1975-08-14 | 1976-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-12 | 1979-08-14 | 1980-02-13 | $7700.00 | Window Closed / Lapsed |