US3390542A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioning
Assignee: Hupp Corp
•
Filing: 1966-12-21
•
Granted: 1968-07-02
•
Expires: 1986-12-21
Abstract
No abstract record available.
Inventors
- 👤 Robert P Perry
- 👤 James M Farrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:23
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/20; F24F1/00; F24F1/02; F24F1/028; F24F1/0284; F24F1/03; F24F1/031; F24F1/0328; F24F1/035
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2408973A
Cited
US2408972A
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US2730873A
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US2769320A
Cited
US2801582A
Cited
US2858678A
Cited
US2917128A
Cited
US3159983A
Cited
US3301166A
Cited
US3277663A
Cited
US3306182A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-02 | 1972-01-01 | 1972-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-02 | 1976-01-01 | 1976-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-02 | 1980-01-01 | 1980-07-02 | $7700.00 | Window Closed / Lapsed |