Patent US2919859A successfully refreshed from Google Patents.
US2919859A
Expired / Lapsed
US
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Temperature control system
Assignee: Individual
•
Filing: 1956-09-04
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Granted: 1960-01-05
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Expires: 1976-09-04
Abstract
No abstract record available.
Inventors
- 👤 Rudolph E Krueger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:27
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/20; G05D23/24; G05D23/1919; G05D23/1925
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2219147A
Cited
US2250946A
Cited
US2353201A
Cited
US2425000A
Cited
US2412071A
Cited
US2474441A
Cited
US2587815A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |