US2610270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chopper
Assignee: Individual
•
Filing: 1949-09-03
•
Granted: 1952-09-09
•
Expires: 1969-09-03
Abstract
No abstract record available.
Inventors
- 👤 Curtiss R Schafer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:33
CPC Classifications
H; H01; H01H; H01H3/00; H01H3/22; H01H3/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1836058A
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GB358634A
Cited
US2109761A
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US2114036A
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US2197473A
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US2217177A
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US2280143A
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US2439126A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-09 | 1956-03-10 | 1956-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-09 | 1960-03-10 | 1960-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-09 | 1964-03-10 | 1964-09-09 | $7700.00 | Window Closed / Lapsed |