US2553949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit protecting device for motors and the like
Assignee: SCREW MACHINE PRODUCTS CO
•
Filing: 1945-05-09
•
Granted: 1951-05-22
•
Expires: 1965-05-09
Abstract
No abstract record available.
Inventors
- 👤 Putnam M Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:54
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/12; H02H3/13
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US476330A
Cited
DE248094C
Cited
US792859A
Cited
US973322A
Cited
US1179637A
Cited
US1134752A
Cited
US1189409A
Cited
US1272432A
Cited
US1652346A
Cited
US1569147A
Cited
US1800256A
Cited
US1871875A
Cited
US1849117A
Cited
GB382695A
Cited
US1922452A
Cited
GB475130A
Cited
US2256117A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-21 | 1954-11-20 | 1955-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-21 | 1958-11-20 | 1959-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-21 | 1962-11-20 | 1963-05-22 | $7700.00 | Window Closed / Lapsed |