US2221338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deposition of material
Assignee: Research Corp
•
Filing: 1936-10-21
•
Granted: 1940-11-12
•
Expires: 1956-10-21
Abstract
No abstract record available.
Inventors
- 👤 Harry A Wintermute
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:13
CPC Classifications
B; B05; B05B; B05B5/00; B05B5/08; B05B5/14; B05B5/025; B05B5/03; B05B5/032; B05B5/10; Y; Y10; Y10S; Y10S101/00; Y10S101/37
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) | 1943-11-12 | 1944-05-13 | 1944-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-11-12 | 1948-05-13 | 1948-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-11-12 | 1952-05-13 | 1952-11-12 | $7700.00 | Window Closed / Lapsed |