US2845685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete wall form joint
Assignee: Individual
•
Filing: 1956-08-30
•
Granted: 1958-08-05
•
Expires: 1976-08-30
Abstract
No abstract record available.
Inventors
- 👤 Einar C Lovgren
- 👤 Edward C Prest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:24
CPC Classifications
E; E04; E04G; E04G9/00; E04G9/02; E04G2009/028; F; F16; F16B; F16B2200/00; F16B2200/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US807378A
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US937817A
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US1107477A
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US1397708A
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US2213159A
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US2340864A
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US2442962A
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US2518186A
Cited
US2569284A
Cited
US2640249A
Cited
US2647287A
Cited
US2760249A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |