US2550067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for performing chemical tests
Assignee: Lessells and Associates Inc
•
Filing: 1950-03-24
•
Granted: 1951-04-24
•
Expires: 1970-03-24
Abstract
No abstract record available.
Inventors
- 👤 Thomas A Hewson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:38
CPC Classifications
G; G01; G01N; G01N35/00; G01N35/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
APPARATUS OF THE CLASS DESCRIBED, COMPRISING A CASING, AN UPPER DOOR HINGED TO SAID CASING, A RECEPTACLE-RECEIVER PIVOTALLY MOUNTED ON SAID DOOR, MEANS MOUNTED WITHIN THE CASING FOR ENGAGING A RECEPTACLE IN SAID RECEIVER AND FOR TILTING IT THROUGH A SUCCESSION OF PREDETERMINED ANGLES, A LOWER DOOR HINGED TO SAID CASING BENEATH
Claim 2
Dependent Claim
52 words
APPARATUS OF THE CLASS DESCRIBED, COMPRISING A CASING, AN UPPER DOOR HINGED TO SAID CASING, A RECEPTACLE-RECEIVER PIVOTALLY MOUNTED ON SAID DOOR, MEANS MOUNTED WITHIN THE CASING FOR ENGAGING A RECEPTACLE IN SAID RECEIVER AND FOR TILTING IT THROUGH A SUCCESSION OF PREDETERMINED ANGLES, A LOWER DOOR HINGED TO SAID CASING BENEATH
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) | 1954-04-23 | 1954-10-23 | 1955-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-23 | 1958-10-23 | 1959-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-23 | 1962-10-23 | 1963-04-24 | $7700.00 | Window Closed / Lapsed |