US2518490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating apparatus
Assignee: Individual
•
Filing: 1946-10-07
•
Granted: 1950-08-15
•
Expires: 1966-10-07
Abstract
No abstract record available.
Inventors
- 👤 Vernon F Parry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:06
CPC Classifications
C; C10; C10J; C10J3/00; C10J3/02; C10J3/06; C10J3/10; C10J3/12; C10J3/20; C10J3/30; C10J3/72; C10J3/723; C10J3/74; C10J3/86; B; B01; B01J; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00026; B01J2208/00035; B01J2208/00088; B01J2208/00477; B01J2208/00495; B01J2208/00504; B01J2208/0053; C10J2300/00; C10J2300/09; C10J2300/0913; C10J2300/0943; C10J2300/0946; C10J2300/0953; C10J2300/0956; C10J2300/0959; C10J2300/0973; C10J2300/0976; C10J2300/12; C10J2300/1253; C10J2300/18; C10J2300/1807; C10J2300/1823
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-14 | 1954-02-13 | 1954-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-14 | 1958-02-13 | 1958-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-14 | 1962-02-13 | 1962-08-15 | $7700.00 | Window Closed / Lapsed |