US2618735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating apparatus
Assignee: Raytheon Co
•
Filing: 1947-01-11
•
Granted: 1952-11-18
•
Expires: 1967-01-11
Abstract
No abstract record available.
Inventors
- 👤 William M Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:39
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/74
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2129712A
Cited
US2370161A
Cited
US2259318A
Cited
US2218223A
Cited
US2250096A
Cited
US2337184A
Cited
US2408425A
Cited
US2408295A
Cited
US2416168A
Cited
US2427094A
Cited
US2405277A
Cited
US2495415A
Cited
US2497670A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-18 | 1956-05-19 | 1956-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-18 | 1960-05-19 | 1960-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-18 | 1964-05-19 | 1964-11-18 | $7700.00 | Window Closed / Lapsed |