US2545805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating apparatus
Assignee: ThyssenKrupp Budd Co
•
Filing: 1946-07-31
•
Granted: 1951-03-20
•
Expires: 1966-07-31
Abstract
No abstract record available.
Inventors
- 👤 Edwin M Callender
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:58
CPC Classifications
F; F24; F24C; F24C7/00; F24C7/04; F24C7/043; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1003; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49879
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1317883A
Cited
US946772A
Cited
US1239770A
Cited
US1701096A
Cited
GB304779A
Cited
US1987147A
Cited
US2041631A
Cited
US2233190A
Cited
US2398371A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-19 | 1954-09-18 | 1955-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-19 | 1958-09-18 | 1959-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-19 | 1962-09-18 | 1963-03-20 | $7700.00 | Window Closed / Lapsed |