US2443441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suspension switch
Assignee: Individual
•
Filing: 1946-06-04
•
Granted: 1948-06-15
•
Expires: 1966-06-04
Abstract
No abstract record available.
Inventors
- 👤 Birge Nathaniel Bradford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:41
CPC Classifications
H; H01; H01H; H01H17/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US213500A
Cited
US260206A
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US332336A
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US596989A
Cited
US1021881A
Cited
US1217707A
Cited
US1374027A
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US1744237A
Cited
US1548678A
Cited
US1987013A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-15 | 1951-12-15 | 1952-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-15 | 1955-12-15 | 1956-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-15 | 1959-12-15 | 1960-06-15 | $7700.00 | Window Closed / Lapsed |