Patent US2784243A successfully refreshed from Google Patents.
US2784243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat treating furnace
Assignee: Pacific Scientific Co
•
Filing: 1954-04-02
•
Granted: 1957-03-05
•
Expires: 1974-04-02
Abstract
No abstract record available.
Inventors
- 👤 Decker G Mcallister
- 👤 William J Parsons
- 👤 Harold E Mescher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:09
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/74; C21D1/767
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1464499A
Cited
US1335199A
Cited
US1721840A
Cited
US1686009A
Cited
GB416157A
Cited
US2400056A
Cited
US2611790A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-04 | 1960-09-03 | 1961-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-04 | 1964-09-03 | 1965-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-04 | 1968-09-03 | 1969-03-05 | $7700.00 | Window Closed / Lapsed |