US2727430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lens mount for projectors and the like
Assignee: Individual
•
Filing: 1949-11-07
•
Granted: 1955-12-20
•
Expires: 1969-11-07
Abstract
No abstract record available.
Inventors
- 👤 Ernest W Goldberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:31
CPC Classifications
G; G02; G02B; G02B1/00; G03; G03B; G03B19/00; G03B19/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE479446C
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US859215A
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US930210A
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US1282293A
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US2169010A
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US2231743A
Cited
US2221920A
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US2292966A
Cited
US2477107A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-19 | 1959-06-20 | 1959-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-19 | 1963-06-20 | 1963-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-19 | 1967-06-20 | 1967-12-20 | $7700.00 | Window Closed / Lapsed |