US2567036A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid-tight light transmitting apparatus
Assignee: Elsag Bailey Inc
•
Filing: 1948-08-26
•
Granted: 1951-09-04
•
Expires: 1968-08-26
Abstract
No abstract record available.
Inventors
- 👤 Jack F Shannon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:38
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/42; G02B6/4201; G02B6/4204; Y; Y10; Y10S; Y10S385/00; Y10S385/901; Y10T; Y10T403/00; Y10T403/36; Y10T403/364; Y10T403/368; Y10T403/67
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1008485A
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US1883971A
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US1875048A
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US2215576A
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US2295045A
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US2337535A
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US2382251A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-03 | 1955-03-05 | 1955-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-03 | 1959-03-05 | 1959-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-03 | 1963-03-05 | 1963-09-04 | $7700.00 | Window Closed / Lapsed |