US2644720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1949-12-16
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Granted: 1953-07-07
•
Expires: 1969-12-16
Abstract
No abstract record available.
Inventors
- 👤 Clifford H Carr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:09
CPC Classifications
B; B05; B05B; B05B1/00; B05B1/34; B05B1/3405; B05B1/341; B05B1/3421; B05B1/3426; B05B15/00; B05B15/60; B05B15/65; B05B15/658
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US572606A
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US978597A
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US1198886A
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US1511940A
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US1639685A
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US1659470A
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US1762313A
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US2218110A
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US2247897A
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US2317707A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-06 | 1957-01-05 | 1957-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-06 | 1961-01-05 | 1961-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-06 | 1965-01-05 | 1965-07-07 | $7700.00 | Window Closed / Lapsed |