Patent US3283460A successfully refreshed from Google Patents.
US3283460A
Expired / Lapsed
US
⏱️ 0.0 years remaining
L-shaped means for dampproofing basements forming passageways between foundation floor and wall
Assignee: Individual
•
Filing: 1963-07-03
•
Granted: 1966-11-08
•
Expires: 1983-07-03
Abstract
No abstract record available.
Inventors
- 👤 William A Patrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:42
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/70; E04B1/703; E04B1/7023; E04B1/7038
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US349735A
Cited
US1734777A
Cited
US2157290A
Cited
US2717513A
Cited
US2948993A
Cited
US3024574A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |