US2453172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grid cap
Assignee: Individual
•
Filing: 1944-07-12
•
Granted: 1948-11-09
•
Expires: 1964-07-12
Abstract
No abstract record available.
Inventors
- 👤 Wilkie Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:25
CPC Classifications
H; H01; H01R; H01R24/00; H01R24/20; H01R2101/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1323077A
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US1247656A
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US1760693A
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US1877830A
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US1835000A
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US1965964A
Cited
US1905245A
Cited
US2024814A
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US2076694A
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US2163771A
Cited
US2292242A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-09 | 1952-05-10 | 1952-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-09 | 1956-05-10 | 1956-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-09 | 1960-05-10 | 1960-11-09 | $7700.00 | Window Closed / Lapsed |