US2190220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical apparatus
Assignee: Ace Glass Inc
•
Filing: 1939-06-12
•
Granted: 1940-02-13
•
Expires: 1959-06-12
Abstract
No abstract record available.
Inventors
- 👤 William F Schilling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:11
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/56; B01L3/565; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44265; Y10T24/44291; Y10T24/44368; Y10T24/44376; Y10T24/44385; Y10T24/44402
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) | 1943-02-12 | 1943-08-14 | 1944-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-02-12 | 1947-08-14 | 1948-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-02-12 | 1951-08-14 | 1952-02-13 | $7700.00 | Window Closed / Lapsed |