US3104477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Level
Assignee: Individual
•
Filing: 1961-08-28
•
Granted: 1963-09-24
•
Expires: 1981-08-28
Abstract
No abstract record available.
Inventors
- 👤 Betty J Edwill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:29
CPC Classifications
G; G01; G01C; G01C9/00; G01C9/18; G01C9/24; G01C9/26; G01C9/28; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32426; Y10T403/32442; Y10T403/60; Y10T403/602; Y10T403/604
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
102 words
AN EXTENSIBLE LEVEL COMPRISING TWO ELONGATED BODIES IN END-TO-END RELATION, ONE OF SAID BODIES HAVING A LEVEL INDICATOR IN THE END OPPOSITE SAID OTHER BODY, AND THE OTHER BODY HAVING AN INDICATOR AT EACH END, EACH BODY HAVING A PAIR OF LONGITUDINAL HOLES EXTENDING THEREIN, A PAIR OF ROUND BARS, EACH BAR BEING DISPOSED IN ONE OF THE PAIRS OF HOLES IN EACH OF SAID BODIES, EACH BAR HAVING A PLURALITY OF GROOVES IN EACH HALF REPRESENTING PREDETERMINED EXPANDED POSITIONS OF THE LEVEL, AND A LATCH MEANS IN EACH BODY SEATING IN SAID GROOVES FOR LOCKING SAID BARS IN SAID PREDETERMINED POSITIONS.
References Cited (Backward Citations)
GB706308A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |