US3440972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Associated Electrical Industries Ltd
•
Filing: 1967-01-03
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Granted: 1969-04-29
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Expires: 1987-01-03
Abstract
No abstract record available.
Inventors
- 👤 Eric Sidebotham
- 👤 George James Human
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:32
CPC Classifications
B; B65; B65G; B65G47/00; B65G47/34; B65G47/46; B65G47/48; B65G47/49; B65G47/496; B61; B61L; B61L23/00; B61L23/002; B61L23/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-28 | 1972-10-28 | 1973-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-28 | 1976-10-28 | 1977-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-28 | 1980-10-28 | 1981-04-29 | $7700.00 | Window Closed / Lapsed |