Patent US2681807A successfully refreshed from Google Patents.
US2681807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fusee holder
Assignee: Individual
•
Filing: 1951-06-02
•
Granted: 1954-06-22
•
Expires: 1971-06-02
Abstract
No abstract record available.
Inventors
- 👤 Gustav S Krafft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:46
CPC Classifications
B; B61; B61G; B61G7/00; B61G7/02; Y; Y10; Y10S; Y10S285/00; Y10S285/902; Y10T; Y10T279/00; Y10T279/17; Y10T279/17128; Y10T279/17171; Y10T279/17188; Y10T403/00; Y10T403/60; Y10T403/608; Y10T403/70; Y10T403/7047
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US185147A
Cited
US2578296A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-21 | 1957-12-21 | 1958-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-21 | 1961-12-21 | 1962-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-21 | 1965-12-21 | 1966-06-22 | $7700.00 | Window Closed / Lapsed |