US2240402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Illuminated microscope
Assignee: PLASTIC PROCESS Co
•
Filing: 1939-03-09
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Granted: 1941-04-29
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Expires: 1959-03-09
Abstract
No abstract record available.
Inventors
- 👤 Joroslow Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:19
CPC Classifications
G; G02; G02B; G02B25/00; G02B25/02; A; A61; A61B; A61B1/00; A61B1/227; A61B1/06; A61B1/07; Y; Y10; Y10S; Y10S362/00; Y10S362/804; Y10S385/00; Y10S385/901; Y10S385/902
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) | 1944-04-28 | 1944-10-28 | 1945-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-04-28 | 1948-10-28 | 1949-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-04-28 | 1952-10-28 | 1953-04-29 | $7700.00 | Window Closed / Lapsed |