Patent US2288269A successfully refreshed from Google Patents.
US2288269A
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Electrostatic heating apparatus
Assignee: Compo Shoe Machinery Corp
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Filing: 1941-06-04
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Granted: 1942-06-30
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Expires: 1961-06-04
Abstract
No abstract record available.
Inventors
- 👤 Ervin L Crandell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:56
CPC Classifications
B; B30; B30B; B30B15/00; B30B15/34; B32; B32B; B32B37/00; B32B37/06; H; H05; H05B; H05B6/00; H05B6/46; H05B6/60; B32B2310/00; B32B2310/08; B32B2310/12; B32B37/12; Y; Y10; Y10S; Y10S264/00; Y10S264/46; Y10S53/00; Y10S53/02
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) | 1945-06-29 | 1945-12-29 | 1946-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-06-29 | 1949-12-29 | 1950-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-06-29 | 1953-12-29 | 1954-06-30 | $7700.00 | Window Closed / Lapsed |