Patent US3415073A successfully refreshed from Google Patents.
US3415073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roof-type air conditioning system
Assignee: WALTER D AMMONS
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Filing: 1967-06-12
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Granted: 1968-12-10
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Expires: 1987-06-12
Abstract
No abstract record available.
Inventors
- 👤 Walter D Ammons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:57
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/20; F24F1/00; F24F1/02; F24F1/029; F24F1/0328; F24F1/035
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) | 1971-12-10 | 1972-06-10 | 1972-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-10 | 1976-06-10 | 1976-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-10 | 1980-06-10 | 1980-12-10 | $7700.00 | Window Closed / Lapsed |