US3378307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circular saw for cutting concrete surfaces
Assignee: CONCRETE CUTTING EQUIPMENT CO
•
Filing: 1965-07-22
•
Granted: 1968-04-16
•
Expires: 1985-07-22
Abstract
No abstract record available.
Inventors
- 👤 Edward J Dempsey
- 👤 Kenyon C Barnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:39
CPC Classifications
B; B28; B28D; B28D1/00; B28D1/02; B28D1/04; B28D1/044; B23; B23Q; B23Q5/00; B23Q5/22; B23Q5/34; B23Q5/38; B23Q5/385; B23Q9/00; B23Q9/0014; B28D1/045
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US278317A
Cited
US2079864A
Cited
US2421970A
Cited
US2463771A
Cited
US2502043A
Cited
US2525712A
Cited
US2689718A
Cited
US2895281A
Cited
US3148001A
Cited
US3323507A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-16 | 1971-10-16 | 1972-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-16 | 1975-10-16 | 1976-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-16 | 1979-10-16 | 1980-04-16 | $7700.00 | Window Closed / Lapsed |