US2704309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulated electrical conductor and hanger for moving trolleys
Assignee: Insul 8 Corp
•
Filing: 1952-08-29
•
Granted: 1955-03-15
•
Expires: 1972-08-29
Abstract
No abstract record available.
Inventors
- 👤 Tirey L Ford
- 👤 John B Shaw
- 👤 Jr Alleyne C Howell
- 👤 Jacob E Pfaff
- 👤 Rice David Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:27
CPC Classifications
H; H02; H02G; H02G5/00; H02G5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US490297A
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US532796A
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US1181477A
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US1398005A
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US1357454A
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US2155242A
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US2304720A
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US2324993A
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US2413061A
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US2428957A
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US2422132A
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US2668199A
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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) | 1958-03-14 | 1958-09-13 | 1959-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-14 | 1962-09-13 | 1963-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-14 | 1966-09-13 | 1967-03-15 | $7700.00 | Window Closed / Lapsed |