Patent US2698778A successfully refreshed from Google Patents.
US2698778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipette
Assignee: Individual
•
Filing: 1952-08-28
•
Granted: 1955-01-04
•
Expires: 1972-08-28
Abstract
No abstract record available.
Inventors
- 👤 Lloyd V Guild
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:50
CPC Classifications
B; B01; B01L; B01L5/00; B01L5/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
IN APPARATUS FOR ANALYZING GAS MIXTURES, A PIPETTE COMPRISING A CYLINDRICAL CONTAINER HAVING A CONICAL BASE AND A CONICAL TOP, A CYLINDRICAL PARTITION EXTENDING INWARDLY FROM THE BASE OF SAID CONICAL TOP TO SUBSTANTIALLY THE BOTTOM OF THE CONTAINER FORMING A SEAL WITH THE OUTER WALL AT THE TOP THEREOF AND BEING OPEN AT THE BOTTOM PORTION THEROF, A PLURALITY OF GLASS RODS OF EQUAL LENGTHS DISPOSED IN SAID FILLING THE CHAMBER FORMED BY THE CY-
Claim 2
Dependent Claim
76 words
IN APPARATUS FOR ANALYZING GAS MIXTURES, A PIPETTE COMPRISING A CYLINDRICAL CONTAINER HAVING A CONICAL BASE AND A CONICAL TOP, A CYLINDRICAL PARTITION EXTENDING INWARDLY FROM THE BASE OF SAID CONICAL TOP TO SUBSTANTIALLY THE BOTTOM OF THE CONTAINER FORMING A SEAL WITH THE OUTER WALL AT THE TOP THEREOF AND BEING OPEN AT THE BOTTOM PORTION THEROF, A PLURALITY OF GLASS RODS OF EQUAL LENGTHS DISPOSED IN SAID FILLING THE CHAMBER FORMED BY THE CY-
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-03 | 1958-07-05 | 1959-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-03 | 1962-07-05 | 1963-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-03 | 1966-07-05 | 1967-01-04 | $7700.00 | Window Closed / Lapsed |