US3373571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for handling steel forms in tunnels
Assignee: Ewing Records & Associates Inc
•
Filing: 1966-01-06
•
Granted: 1968-03-19
•
Expires: 1986-01-06
Abstract
No abstract record available.
Inventors
- 👤 William M Records
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:06
CPC Classifications
E; E21; E21D; E21D11/00; E21D11/04; E21D11/10; E21D11/102; E21D11/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US466046A
Cited
US1292203A
Cited
US1382668A
Cited
US1642559A
Cited
US1792084A
Cited
US1722038A
Cited
US1734773A
Cited
FR949495A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |