US2528733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crossing gate
Assignee: Individual
•
Filing: 1945-03-30
•
Granted: 1950-11-07
•
Expires: 1965-03-30
Abstract
No abstract record available.
Inventors
- 👤 Edward A Brass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:19
CPC Classifications
B; B61; B61L; B61L29/00; B61L29/24; B61L29/243
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1839142A
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US1934429A
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US1964081A
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US1888058A
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US2098284A
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US2038482A
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US2222115A
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US2295419A
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US2309152A
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US2342306A
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US2351857A
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US2372579A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-06 | 1954-05-08 | 1954-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-06 | 1958-05-08 | 1958-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-06 | 1962-05-08 | 1962-11-07 | $7700.00 | Window Closed / Lapsed |