US2777370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete expansion joints
Assignee: Individual
•
Filing: 1951-05-22
•
Granted: 1957-01-15
•
Expires: 1971-05-22
Abstract
No abstract record available.
Inventors
- 👤 The Union Savings Trus Company
- 👤 Carl J Heltzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:14
CPC Classifications
E; E01; E01C; E01C11/00; E01C11/02; E01C11/04; E01C11/12; E01C11/126; E01C11/14
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US207238A
Cited
FR720808A
Cited
US2203078A
Cited
US2330214A
Cited
US2330213A
Cited
US2479434A
Cited
US2441903A
Cited
US2419022A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-15 | 1960-07-16 | 1961-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-15 | 1964-07-16 | 1965-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-15 | 1968-07-16 | 1969-01-15 | $7700.00 | Window Closed / Lapsed |