US3406460A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bolt hole marker
Assignee: WALTER R COLWELL
•
Filing: 1965-06-17
•
Granted: 1968-10-22
•
Expires: 1985-06-17
Abstract
No abstract record available.
Inventors
- 👤 Walter R Colwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:05
CPC Classifications
B; B25; B25H; B25H7/00; B25H7/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A METHOD OF MARKING BOLT HOLES ON A BASE PLATE MEMBER IS SLAB CONSTRUCTION WHEREIN FOUNDATION BOLTS ARE PROVIDED AT SPACED INTERVALS ALONG AND BACK FROM THE EDGE OF A CONCRETE SLAB, SAID DISTANCE BACK BEING ABOUT ONE-HALF THE WIDTH OF SAID BASE PLATE, WHICH COMPRISES; MARKING SAID CONCRETE SLAB WITH A CHALK LINE ALONG THE ENTIRE EDGE OF SAID CONCRETE SLAB, SAID CHALK LINE BEING SPACED BACK FROM THE EDGE OF SAID CONCRETE SLAB A DISTANCE EQUAL TO THE WIDTH OF SAID BASE PLATE; PLACING SAID BASE PLATE EDGE ON THE INSIDE OF AND NEXT TO SAID CHALK
Claim 2
Independent Claim
99 words
A METHOD OF MARKING BOLT HOLES ON A BASE PLATE MEMBER IS SLAB CONSTRUCTION WHEREIN FOUNDATION BOLTS ARE PROVIDED AT SPACED INTERVALS ALONG AND BACK FROM THE EDGE OF A CONCRETE SLAB, SAID DISTANCE BACK BEING ABOUT ONE-HALF THE WIDTH OF SAID BASE PLATE, WHICH COMPRISES; MARKING SAID CONCRETE SLAB WITH A CHALK LINE ALONG THE ENTIRE EDGE OF SAID CONCRETE SLAB, SAID CHALK LINE BEING SPACED BACK FROM THE EDGE OF SAID CONCRETE SLAB A DISTANCE EQUAL TO THE WIDTH OF SAID BASE PLATE; PLACING SAID BASE PLATE EDGE ON THE INSIDE OF AND NEXT TO SAID CHALK
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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) | 1971-10-22 | 1972-04-22 | 1972-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-22 | 1976-04-22 | 1976-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-22 | 1980-04-22 | 1980-10-22 | $7700.00 | Window Closed / Lapsed |