Patent US3398494A successfully refreshed from Google Patents.
US3398494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wall joint
Assignee: Individual
•
Filing: 1967-01-03
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Granted: 1968-08-27
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Expires: 1987-01-03
Abstract
No abstract record available.
Inventors
- 👤 Elton H Larson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:56
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/66; E04B1/68; E04B1/6815; E04F; E04F13/00; E04F13/02; E04F13/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US741288A
Cited
US2150710A
Cited
US3015194A
Cited
US3060817A
Cited
US2990652A
Cited
GB896034A
Cited
FR1248986A
Cited
US3097579A
Cited
FR1298439A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-27 | 1972-02-26 | 1972-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-27 | 1976-02-26 | 1976-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-27 | 1980-02-26 | 1980-08-27 | $7700.00 | Window Closed / Lapsed |