Patent US2672129A successfully refreshed from Google Patents.
US2672129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chipping hammer
Assignee: Chicago Pneumatic Tool Co LLC
•
Filing: 1949-03-17
•
Granted: 1954-03-16
•
Expires: 1969-03-17
Abstract
No abstract record available.
Inventors
- 👤 Howard R Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:11
CPC Classifications
B; B25; B25D; B25D17/00; B25D17/08; B25D17/20; B25D17/22; B25D9/00; B25D9/06; B25D9/08; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86389; Y10T137/86405; Y10T137/86413; Y10T279/00; Y10T279/17; Y10T279/17042; Y10T279/17085
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1391629A
Cited
US855515A
Cited
US825669A
Cited
US1279929A
Cited
US1553261A
Cited
US1615890A
Cited
US1739338A
Cited
US1652374A
Cited
US1632921A
Cited
US1590261A
Cited
US1846804A
Cited
US1776604A
Cited
US2025403A
Cited
US2078924A
Cited
US2138342A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-15 | 1957-09-14 | 1958-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-15 | 1961-09-14 | 1962-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-15 | 1965-09-14 | 1966-03-16 | $7700.00 | Window Closed / Lapsed |