Patent US2754463A successfully refreshed from Google Patents.
US1682693A
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Support for light signals
Assignee: SPX Technologies Inc
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Filing: 1924-12-29
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Granted: 1928-08-28
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Expires: 1944-12-29
Abstract
No abstract record available.
Inventors
- 👤 Salisbury M Day
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:30
CPC Classifications
B; B61; B61L; B61L5/00; B61L5/12; B61L5/18; B61L5/1809; B61L5/1863
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1931-08-28 | 1932-02-27 | 1932-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-08-28 | 1936-02-27 | 1936-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-08-28 | 1940-02-27 | 1940-08-28 | $7700.00 | Window Closed / Lapsed |