US2852640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Time delay device
Assignee: Controls Company of America
•
Filing: 1955-10-06
•
Granted: 1958-09-16
•
Expires: 1975-10-06
Abstract
No abstract record available.
Inventors
- 👤 Ralph W Delancey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:17
CPC Classifications
H; H01; H01H; H01H43/00; H01H43/30; H01H43/301; H01H43/302; H01H43/304; F; F23; F23N; F23N5/00; F23N5/02; F23N5/04; G; G05; G05B; G05B11/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1562932A
Cited
US1898174A
Cited
US1871875A
Cited
US1948938A
Cited
US1960408A
Cited
US2110690A
Cited
US2235337A
Cited
US2248623A
Cited
US2303153A
Cited
US2341905A
Cited
US2535969A
Cited
US2499906A
Cited
US2563341A
Cited
US2605308A
Cited
US2689288A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |