Patent US3547014A successfully refreshed from Google Patents.
US3547014A
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Concrete finishing apparatus
Assignee: HAROLD J AUSTIN
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Filing: 1969-08-04
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Granted: 1970-12-15
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Expires: 1989-08-04
Abstract
No abstract record available.
Inventors
- 👤 Harold J Austin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:31
CPC Classifications
B; B28; B28B; B28B1/00; B28B1/08; B28B1/093; B28B11/00; B28B11/08; B28B11/0845; B28B11/0854; E; E01; E01C; E01C19/00; E01C19/22; E01C19/23; E01C19/29; E01C19/30; E01C19/34; E01C19/40; E01C19/402; E01C19/41; E04; E04G; E04G21/00; E04G21/02; E04G21/06; E04G21/063; E04G21/066
Claims Analysis
Total Claims: 0
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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) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |