US2410055A
Expired / Lapsed
US
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Assignee: Perfex Corp
•
Filing: 1944-07-28
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Granted: 1946-10-29
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Expires: 1964-07-28
Abstract
No abstract record available.
Inventors
- 👤 Paul G Frerer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:42
CPC Classifications
H; H01; H01H; H01H5/00; H01H5/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-10-28 | 1950-04-29 | 1950-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-10-28 | 1954-04-29 | 1954-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-10-28 | 1958-04-29 | 1958-10-29 | $7700.00 | Window Closed / Lapsed |