US2994758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating unit control
Assignee: Vibrantz Corp
•
Filing: 1956-02-08
•
Granted: 1961-08-01
•
Expires: 1976-02-08
Abstract
No abstract record available.
Inventors
- 👤 William D Kelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:56
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B1/0202; H05B1/0213
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2181606A
Cited
US2425459A
Cited
US2575084A
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US2638496A
Cited
US2667566A
Cited
US2943176A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-31 | 1965-01-30 | 1965-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-31 | 1969-01-30 | 1969-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-31 | 1973-01-30 | 1973-08-01 | $7700.00 | Window Closed / Lapsed |