Patent US3289787A successfully refreshed from Google Patents.
Patent US977025A successfully refreshed from Google Patents.
US977025A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mold for hollow partition-blocks.
Assignee: PLASTER BLOCK Co
•
Filing: 1909-05-28
•
Granted: 1910-11-29
•
Expires: 1929-05-28
Abstract
No abstract record available.
Inventors
- 👤 John F Makowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:48
CPC Classifications
B; B30; B30B; B30B11/00; B30B11/02; B30B11/04; B29; B29C; B29C43/00; B29C43/32; B29C43/50
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1913-11-28 | 1914-05-30 | 1914-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-11-28 | 1918-05-30 | 1918-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-11-28 | 1922-05-30 | 1922-11-29 | $7700.00 | Window Closed / Lapsed |