US1351440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Saw and method and means of hardening the same
Assignee: HENRY C PITTMAN
•
Filing: 1917-11-30
•
Granted: 1920-08-31
•
Expires: 1937-11-30
Abstract
No abstract record available.
Inventors
- 👤 Reinhart W Pittman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:13
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/24; Y; Y10; Y10T; Y10T407/00; Y10T407/27
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) | 1923-08-31 | 1924-03-01 | 1924-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-08-31 | 1928-03-01 | 1928-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-08-31 | 1932-03-01 | 1932-08-31 | $7700.00 | Window Closed / Lapsed |