US2652745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct reading projection clock apparatus
Assignee: Individual
•
Filing: 1950-11-07
•
Granted: 1953-09-22
•
Expires: 1970-11-07
Abstract
No abstract record available.
Inventors
- 👤 Francis J Quinn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:29
CPC Classifications
G; G04; G04B; G04B19/00; G04B19/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1032160A
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US1097310A
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US1147501A
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US1290947A
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US1523767A
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US1580286A
Cited
US1579880A
Cited
US2025361A
Cited
US2078936A
Cited
US2351238A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-21 | 1957-03-23 | 1957-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-21 | 1961-03-23 | 1961-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-21 | 1965-03-23 | 1965-09-22 | $7700.00 | Window Closed / Lapsed |