Patent US3259178A successfully refreshed from Google Patents.
US3259178A
Expired / Lapsed
US
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Induction unit for heating, air conditioning and ventilating
Assignee: Individual
•
Filing: 1962-01-11
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Granted: 1966-07-05
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Expires: 1982-01-11
Abstract
No abstract record available.
Inventors
- 👤 Edwin M Tarnoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:02
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/26
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) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |