US3015939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating and freezing system
Assignee: Individual
•
Filing: 1959-06-22
•
Granted: 1962-01-09
•
Expires: 1979-06-22
Abstract
No abstract record available.
Inventors
- 👤 Maurice W Brainard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:38
CPC Classifications
F; F25; F25B; F25B47/00; F25B47/02; F25B47/022; F25B29/00; F25B29/003; F25B5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2694904A
Cited
US2895307A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-08 | 1965-07-10 | 1966-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-08 | 1969-07-10 | 1970-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-08 | 1973-07-10 | 1974-01-09 | $7700.00 | Window Closed / Lapsed |