US2201991A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for treating workpieces
Assignee: SPRAY ENGINEERING Co
•
Filing: 1936-11-14
•
Granted: 1940-05-28
•
Expires: 1956-11-14
Abstract
No abstract record available.
Inventors
- 👤 Frank G Dennison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:54
CPC Classifications
A; A41; A41H; A41H43/00; A41H43/04; D; D06; D06B; D06B3/00; D06B3/10; D06B2700/00; D06B2700/27
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-05-28 | 1943-11-27 | 1944-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-05-28 | 1947-11-27 | 1948-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-05-28 | 1951-11-27 | 1952-05-28 | $7700.00 | Window Closed / Lapsed |