US3286914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fans
Assignee: Brightside Heating and Engineering Co Ltd
•
Filing: 1964-10-01
•
Granted: 1966-11-22
•
Expires: 1984-10-01
Abstract
No abstract record available.
Inventors
- 👤 Baverstock Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:20
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/66; F04D29/661; F04D29/668; F04D29/663; F04D29/664; F04D29/40; F04D29/42; F04D29/44; F04D29/441; F05; F05D; F05D2250/00; F05D2250/50; F05D2250/52
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) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |