Patent US3218944A successfully refreshed from Google Patents.
US3218944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curb and gutter molding machine
Assignee: Curbmaster of America Inc
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Filing: 1962-12-21
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Granted: 1965-11-23
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Expires: 1982-12-21
Abstract
No abstract record available.
Inventors
- 👤 Burnham L Larsen
- 👤 Bernard J Larsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:47
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/48; E01C19/4886
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A SLAB AND CURB FINISHING MACHINE COMPRISING AN ELONGATED FRAME HAVING A CURB SIDE AND A SLAB SIDE OPPOSITE SAID CURB SIDE AND HAVING WHEELS FOR RIDING ON FORMS FOR CONCRETE OR THE LIKE, A FINISHING PAN STRUCTURE FOR FORMING AND FINISHING A SLAB MOUNTED ON AND EXTENDING TRANSVERSELY ACROSS SAID FRAME AND COMPRISING A FORWARD FINISHING PAN PORTION AND A REAR FINISHING PAN PORTION SPACED LONGITUDINALLY FROM SAID FORWARD FINISHING PAN PORTION A SUBSTANTIAL DISTANCE SUCH AS TO PERMIT RELEASE OF AIR ENTRAINED IN CONCRETE FINISHED THEREBY, A CONTINUOUS CURB MOLD FOR FORMING AND FINISHING A CURB ALONG ONE SIDE OF THE SLAB MOUNTED ON SAID MACHINE AND EXTENDING LONGITUDINALLY ALONG ONE SIDE OF SAID FINISHING PAN STRUCTURE, AND AN ANGLED SCREED MOUNTED ON THE FRONT OF THE FRAME AND INCLINED BACKWARDLY TOWARD SAID CURB MOLD.
Claim 2
Dependent Claim
137 words
A SLAB AND CURB FINISHING MACHINE COMPRISING AN ELONGATED FRAME HAVING A CURB SIDE AND A SLAB SIDE OPPOSITE SAID CURB SIDE AND HAVING WHEELS FOR RIDING ON FORMS FOR CONCRETE OR THE LIKE, A FINISHING PAN STRUCTURE FOR FORMING AND FINISHING A SLAB MOUNTED ON AND EXTENDING TRANSVERSELY ACROSS SAID FRAME AND COMPRISING A FORWARD FINISHING PAN PORTION AND A REAR FINISHING PAN PORTION SPACED LONGITUDINALLY FROM SAID FORWARD FINISHING PAN PORTION A SUBSTANTIAL DISTANCE SUCH AS TO PERMIT RELEASE OF AIR ENTRAINED IN CONCRETE FINISHED THEREBY, A CONTINUOUS CURB MOLD FOR FORMING AND FINISHING A CURB ALONG ONE SIDE OF THE SLAB MOUNTED ON SAID MACHINE AND EXTENDING LONGITUDINALLY ALONG ONE SIDE OF SAID FINISHING PAN STRUCTURE, AND AN ANGLED SCREED MOUNTED ON THE FRONT OF THE FRAME AND INCLINED BACKWARDLY TOWARD SAID CURB MOLD.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |