Patent US2415726A successfully refreshed from Google Patents.
US2415726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for heating oils
Assignee: Phillips Petroleum Co
•
Filing: 1943-12-02
•
Granted: 1947-02-11
•
Expires: 1963-12-02
Abstract
No abstract record available.
Inventors
- 👤 John E Bogk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:25
CPC Classifications
C; C10; C10G; C10G9/00; C10G9/14; C10G9/18; C10G9/20
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1869626A
Cited
US2165725A
Cited
US1901970A
Cited
US2129589A
Cited
US2076854A
Cited
US2224917A
Cited
US2035037A
Cited
US2147609A
Cited
US2108688A
Cited
US2146497A
Cited
US2311421A
Cited
US2249697A
Cited
US2335317A
Cited
US2326473A
Cited
US2363266A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-02-10 | 1950-08-12 | 1951-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-02-10 | 1954-08-12 | 1955-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-02-10 | 1958-08-12 | 1959-02-11 | $7700.00 | Window Closed / Lapsed |