US3396780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Add-on cooling system
Assignee: Udylite Corp
•
Filing: 1966-06-23
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Granted: 1968-08-13
•
Expires: 1986-06-23
Abstract
No abstract record available.
Inventors
- 👤 Michael A Koltuniak
- 👤 Thomas N Urquhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:50
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/08; H01F27/085; C; C25; C25D; C25D21/00; C25D21/02; F; F28; F28F; F28F9/00; H10; H10W; H10W40/00; H10W40/40; H10W40/43
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1626400A
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US2147283A
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FR886160A
Cited
US2412989A
Cited
US2538382A
Cited
GB659391A
Cited
US2744393A
Cited
US2914927A
Cited
US2938712A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-13 | 1972-02-12 | 1972-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-13 | 1976-02-12 | 1976-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-13 | 1980-02-12 | 1980-08-13 | $7700.00 | Window Closed / Lapsed |