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US2344263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Projector
Assignee: Bausch and Lomb Inc
•
Filing: 1942-07-10
•
Granted: 1944-03-14
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Expires: 1962-07-10
Abstract
No abstract record available.
Inventors
- 👤 Willard T Perkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:09
CPC Classifications
G; G03; G03B; G03B23/00
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) | 1947-03-14 | 1947-09-13 | 1948-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-03-14 | 1951-09-13 | 1952-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-03-14 | 1955-09-13 | 1956-03-14 | $7700.00 | Window Closed / Lapsed |