Patent US1999537A successfully refreshed from Google Patents.
US1999537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of frozen plugs from stop-cocks
Assignee: Fisher Scientific Co LLC
•
Filing: 1933-10-09
•
Granted: 1935-04-30
•
Expires: 1953-10-09
Abstract
No abstract record available.
Inventors
- 👤 Edwin H Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:32
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/56; B01L3/567; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49815; Y10T29/49822; Y10T29/53; Y10T29/53796; Y10T29/53839; Y10T29/53848; Y10T29/53852
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1938-04-29 | 1938-10-29 | 1939-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-04-29 | 1942-10-29 | 1943-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-04-29 | 1946-10-29 | 1947-04-30 | $7700.00 | Window Closed / Lapsed |