US2420612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuse
Assignee: Individual
•
Filing: 1939-11-14
•
Granted: 1947-05-13
•
Expires: 1959-11-14
Abstract
No abstract record available.
Inventors
- 👤 Harry J Nichols
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:57
CPC Classifications
F; F42; F42C; F42C15/00; F42C15/24; F42C15/18; F42C15/188
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR505055A
Cited
US1342652A
Cited
GB127924A
Cited
GB145829A
Cited
US1352543A
Cited
US1561687A
Cited
US1774043A
Cited
US1870405A
Cited
FR760486A
Cited
US2030085A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-05-12 | 1950-11-11 | 1951-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-05-12 | 1954-11-11 | 1955-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-05-12 | 1958-11-11 | 1959-05-13 | $7700.00 | Window Closed / Lapsed |