Patent US3426494A successfully refreshed from Google Patents.
US3426494A
Expired / Lapsed
US
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Wall-tie assembly for use in the construction of waterproof walls
Assignee: Individual
•
Filing: 1967-08-15
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Granted: 1969-02-11
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Expires: 1987-08-15
Abstract
No abstract record available.
Inventors
- 👤 Alfred A Hala
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:19
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/02; E04B2/28; E04B2/30; E04B1/00; E04B1/62; E04B1/74; E04B1/76; E04B1/7608; E04B1/7612; E04B1/7616
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB234201A
Cited
US1706008A
Cited
US1770439A
Cited
GB504150A
Cited
US2273198A
Cited
GB857953A
Cited
US2980979A
Cited
US3225506A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-11 | 1972-08-12 | 1973-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-11 | 1976-08-12 | 1977-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-11 | 1980-08-12 | 1981-02-11 | $7700.00 | Window Closed / Lapsed |