Patent US2627306A successfully refreshed from Google Patents.
US2627306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic heater
Assignee: Individual
•
Filing: 1949-04-15
•
Granted: 1953-02-03
•
Expires: 1969-04-15
Abstract
No abstract record available.
Inventors
- 👤 Donald M Stadd
- 👤 Schreiber Raymond Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:29
CPC Classifications
A; A61; A61F; A61F7/00; A61F7/02; A61F7/03; A61F7/032; A61F7/034; F; F23; F23D; F23D99/00; F23D99/002; F23D99/004; F23D2206/00; F23D2206/0057; F23D2206/0063
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US912879A
Cited
US1347631A
Cited
US1266162A
Cited
US1353314A
Cited
GB153213A
Cited
US1502251A
Cited
US1753897A
Cited
FR693002A
Cited
GB399642A
Cited
DE630104C
Cited
US2042690A
Cited
US2579620A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-03 | 1956-08-04 | 1957-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-03 | 1960-08-04 | 1961-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-03 | 1964-08-04 | 1965-02-03 | $7700.00 | Window Closed / Lapsed |