US3502386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Infrared transmitting element
Assignee: Bausch and Lomb Inc
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Filing: 1964-07-31
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Granted: 1970-03-24
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Expires: 1984-07-31
Abstract
No abstract record available.
Inventors
- 👤 Eugene C Letter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:49
CPC Classifications
G; G02; G02B; G02B1/00; G02B1/02; B; B01; B01J; B01J3/00; B01J3/06; C; C01; C01F; C01F11/00; C01F11/20; C01F11/22; C01F5/00; C01F5/26; C01F5/28; C01P; C01P2002/00; C01P2002/80; C01P2002/82; Y; Y10; Y10S; Y10S501/00; Y10S501/90; Y10S501/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-23 | 1973-09-22 | 1974-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-23 | 1977-09-22 | 1978-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-23 | 1981-09-22 | 1982-03-24 | $7700.00 | Window Closed / Lapsed |