US3063202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interlocking concrete construction
Assignee: BETTY S SPICKLEMIER
•
Filing: 1954-06-21
•
Granted: 1962-11-13
•
Expires: 1974-06-21
Abstract
No abstract record available.
Inventors
- 👤 Harold R Carper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:04
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/02; E04C3/20; E04C3/22
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1028578A
Cited
CH68760A
Cited
US1214442A
Cited
FR628717A
Cited
GB309083A
Cited
US2234114A
Cited
US2162872A
Cited
US2413990A
Cited
GB574496A
Cited
US2644497A
Cited
FR1064471A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-12 | 1966-05-14 | 1966-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-12 | 1970-05-14 | 1970-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-12 | 1974-05-14 | 1974-11-13 | $7700.00 | Window Closed / Lapsed |