Patent US3954172A successfully refreshed from Google Patents.
Patent US1069821A successfully refreshed from Google Patents.
US1069821A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete-form fastener.
Assignee: MICHAEL C RYAN
•
Filing: 1908-03-11
•
Granted: 1913-08-12
•
Expires: 1928-03-11
Abstract
No abstract record available.
Inventors
- 👤 Howard M Sherwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:43
CPC Classifications
E; E04; E04G; E04G17/00; E04G17/06; E04G17/065; E04G17/0655; E04G17/0658
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) | 1916-08-11 | 1917-02-10 | 1917-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1920-08-11 | 1921-02-10 | 1921-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1924-08-11 | 1925-02-10 | 1925-08-12 | $7700.00 | Window Closed / Lapsed |