US2405960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collimating system
Assignee: Polaroid Corp
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Filing: 1943-04-22
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Granted: 1946-08-20
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Expires: 1963-04-22
Abstract
No abstract record available.
Inventors
- 👤 Edwin H Land
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:36
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/09; G02B27/0938; G02B27/095; G02B27/0972; G02B27/0911; G02B27/30
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) | 1949-08-19 | 1950-02-18 | 1950-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-08-19 | 1954-02-18 | 1954-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-08-19 | 1958-02-18 | 1958-08-20 | $7700.00 | Window Closed / Lapsed |