US2484448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microphotographic apparatus
Assignee: Individual
•
Filing: 1946-05-13
•
Granted: 1949-10-11
•
Expires: 1966-05-13
Abstract
No abstract record available.
Inventors
- 👤 Everett J Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:01
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/10; G03B21/11; G03B27/00; G03B27/32; G03B27/46; G03B27/47
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2019764A
Cited
US1882293A
Cited
GB469284A
Cited
US2106814A
Cited
US2275519A
Cited
US2369981A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-10 | 1953-04-11 | 1953-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-10 | 1957-04-11 | 1957-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-10 | 1961-04-11 | 1961-10-11 | $7700.00 | Window Closed / Lapsed |