US2452916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: EASTERN SPECIALTY Co
•
Filing: 1947-10-07
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Granted: 1948-11-02
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Expires: 1967-10-07
Abstract
No abstract record available.
Inventors
- 👤 Rudolf A K Fleischmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:26
CPC Classifications
H; H01; H01H; H01H19/00; H01H19/64; H01H19/02; H01H19/10; H01H19/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1356968A
Cited
US2211741A
Cited
US865663A
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US1471865A
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US1559995A
Cited
US1841269A
Cited
US2421983A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-02 | 1952-05-03 | 1952-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-02 | 1956-05-03 | 1956-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-02 | 1960-05-03 | 1960-11-02 | $7700.00 | Window Closed / Lapsed |