US2491672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Box parallel
Assignee: NORMAN R LEADLAY
•
Filing: 1943-12-27
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Granted: 1949-12-20
•
Expires: 1963-12-27
Abstract
No abstract record available.
Inventors
- 👤 Louis A Lowenstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:02
CPC Classifications
G; G01; G01B; G01B3/00; G01B3/30; Y; Y10; Y10S; Y10S148/00; Y10S148/902; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/925; Y10T; Y10T428/00; Y10T428/12; Y10T428/12347; Y10T428/12375; Y10T428/12486
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US359369A
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US518908A
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US1303633A
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US1152157A
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US1157762A
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US1440441A
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US1475963A
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US1815626A
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US2336506A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-19 | 1953-06-20 | 1953-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-19 | 1957-06-20 | 1957-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-19 | 1961-06-20 | 1961-12-20 | $7700.00 | Window Closed / Lapsed |