US3276820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Masonry cutting tool
Assignee: —
•
Filing: —
•
Granted: 1966-10-04
•
Expires: 1983-10-04
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:07
CPC Classifications
E; E01; E01C; E01C23/00; E01C23/06; E01C23/12; E01C23/122; E01C23/124
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
100 words
A PERCUSSIVELY OPERATED TOOL FOR DRILLING AND BREAKING CONCRETE AND THE LIKE, COMPRISING: (A) AN ELONGATED BODY OF SUBSTANTIALLY POLYGONAL CROSS SECTION AND INCLUDING AN INTERMEDIATE PORTION HAVING A PLURALITY OF LONGITUDINALLY EXTENDING INTERSECTING SIDES AND A FRONT PORTION OF GENERALLY PYRAMIDAL SHAPE WHICH ATTENUATES FORWARD FROM SAID INTERMEDIATE PORTION TO TERMINATE IN A POINT ADAPTED FOR DRILLING AND BREAKING CONCRETE AND INCLUDES, A PLURALITY OF LONGITUDINALLY EXTENDING INTERSECTING SIDES SMOOTHLY BLENDING WITH SAID SIDES OF SAID INTERMEDIATE PORTION AND EXTENDING FORWARDLY TO SAID POINT AND DEFINING A PLURALITY OF SMOOTH PATHS EXTENDING REARWARDLY ALONG SAID FRONT AND INTERMEDIATE PORTIONS.
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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |