US3438579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for flame spraying powdered materials
Assignee: POWDER WELD INTERN CORP
•
Filing: 1967-06-28
•
Granted: 1969-04-15
•
Expires: 1987-06-28
Abstract
No abstract record available.
Inventors
- 👤 Randolph A Wiese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:56
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/14; B05B7/1404; B05B7/16; B05B7/20; B05B7/201; B05B7/205
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2072845A
Cited
US2549736A
Cited
CH263739A
Cited
US2594222A
Cited
US2726118A
Cited
US2813750A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |