Patent US4156372A successfully refreshed from Google Patents.
Patent US1557259A successfully refreshed from Google Patents.
US1557259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device and method for assembling armatures
Assignee: Dayton Engineering Laboratories Co
•
Filing: 1920-05-17
•
Granted: 1925-10-13
•
Expires: 1940-05-17
Abstract
No abstract record available.
Inventors
- 👤 George H Leland
- 👤 Robert H Ahlers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:11
CPC Classifications
H; H02; H02K; H02K15/00; H02K15/13; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/49012; Y10T29/4902; Y10T29/49073; Y10T29/51; Y10T29/5147; Y10T29/5148; Y10T29/515; Y10T29/5151; Y10T29/53; Y10T29/5313; Y10T29/53143; Y10T29/53152; Y10T29/53478; Y10T29/53487
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) | 1928-10-12 | 1929-04-13 | 1929-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-10-12 | 1933-04-13 | 1933-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-10-12 | 1937-04-13 | 1937-10-13 | $7700.00 | Window Closed / Lapsed |