Patent US3481192A successfully refreshed from Google Patents.
Patent US3420016A successfully refreshed from Google Patents.
US3420016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Building construction
Assignee: ROBERT L FINDLAY
•
Filing: 1967-02-06
•
Granted: 1969-01-07
•
Expires: 1987-02-06
Abstract
No abstract record available.
Inventors
- 👤 Robert L Findlay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:34
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/0007
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US693494A
Cited
US859176A
Cited
GB151352A
Cited
US2029549A
Cited
US2352807A
Cited
US2726593A
Cited
US3088558A
Cited
US3075253A
Cited
US3260025A
Cited
US3282007A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |