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US2007142A
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Assignee: Francis Keil & Son Inc
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Filing: 1933-12-16
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Granted: 1935-07-02
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Expires: 1953-12-16
Abstract
No abstract record available.
Inventors
- 👤 Henry F Keil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:45
CPC Classifications
E; E05; E05B; E05B29/00; Y; Y10; Y10S; Y10S70/00; Y10S70/15; Y10T; Y10T70/00; Y10T70/70; Y10T70/7441; Y10T70/7486; Y10T70/7508; Y10T70/7559; Y10T70/7588; Y10T70/7593; Y10T70/7599; Y10T70/7638; Y10T70/7667; Y10T70/7684; Y10T70/7689; Y10T70/7695; Y10T70/7751
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) | 1938-07-01 | 1938-12-31 | 1939-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-07-01 | 1942-12-31 | 1943-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-07-01 | 1946-12-31 | 1947-07-02 | $7700.00 | Window Closed / Lapsed |