US2563304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic temperature control apparatus
Assignee: Lindberg Engineering Co
•
Filing: 1944-03-04
•
Granted: 1951-08-07
•
Expires: 1964-03-04
Abstract
No abstract record available.
Inventors
- 👤 Paul E Bjork
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:11
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/275; G05D23/1906; G05D23/1913
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1795753A
Cited
US2045438A
Cited
GB450479A
Cited
US2119061A
Cited
US2259877A
Cited
US2282726A
Cited
US2322942A
Cited
US2285204A
Cited
US2409136A
Cited
US2363413A
Cited
US2394061A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-06 | 1955-02-05 | 1955-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-06 | 1959-02-05 | 1959-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-06 | 1963-02-05 | 1963-08-07 | $7700.00 | Window Closed / Lapsed |