US3237488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill
Assignee: Pratt and Whitney Co Inc
•
Filing: 1963-10-04
•
Granted: 1966-03-01
•
Expires: 1983-10-04
Abstract
No abstract record available.
Inventors
- 👤 Anthony D Parone
- 👤 John F Mcauliffe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:29
CPC Classifications
B; B23; B23B; B23B51/00; B23B51/02; B23B2226/00; B23B2226/27; B23B2251/00; B23B2251/24; B23B2251/241; B23B2251/44; B23B2251/443; B23B2251/56; Y; Y10; Y10T; Y10T408/00; Y10T408/89; Y10T408/909; Y10T408/9095; Y10T408/9097
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A DRILL COMPRISING, A BODY PORTION HAVING TWO FLUTES DEFINING LANDS THEREBETWEEN, ONE OF SAID LANDS BEING PROVIDED WITH A MARGIN AND BODY DIAMETER CLEARANCE THEREBEHIND, THE OTHER OF SAID LANDS HAVING NO CLEARANCE.
Claim 2
Dependent Claim
34 words
A DRILL COMPRISING, A BODY PORTION HAVING TWO FLUTES DEFINING LANDS THEREBETWEEN, ONE OF SAID LANDS BEING PROVIDED WITH A MARGIN AND BODY DIAMETER CLEARANCE THEREBEHIND, THE OTHER OF SAID LANDS HAVING NO CLEARANCE.
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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |