Patent US1630233A successfully refreshed from Google Patents.
US1630233A
Expired / Lapsed
US
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Light for microscopes and the like
Assignee: General Electric Vapor Lamp Co
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Filing: 1923-10-03
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Granted: 1927-05-24
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Expires: 1943-10-03
Abstract
No abstract record available.
Inventors
- 👤 Leroy J Buttolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:33
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/06; H; H01; H01J; H01J13/00; H01J2893/00; H01J2893/0072; H01J2893/0095
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1930-05-23 | 1930-11-22 | 1931-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-05-23 | 1934-11-22 | 1935-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-05-23 | 1938-11-22 | 1939-05-24 | $7700.00 | Window Closed / Lapsed |