US2777093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric pilot wire circuit arrangements for protective or other purposes
Assignee: A Reyrolle and Co Ltd
•
Filing: 1953-02-10
•
Granted: 1957-01-08
•
Expires: 1973-02-10
Abstract
No abstract record available.
Inventors
- 👤 Patrickson John Brian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:18
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/26; H02H3/28; H02H3/30; H02H3/307
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1325889A
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US1779724A
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US1745690A
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US2246324A
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US2523148A
Cited
GB625633A
Cited
AT167797B
Cited
US2696573A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-08 | 1960-07-09 | 1961-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-08 | 1964-07-09 | 1965-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-08 | 1968-07-09 | 1969-01-08 | $7700.00 | Window Closed / Lapsed |