US1644223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Window
Assignee: Detroit Steel Products Co Inc
•
Filing: 1926-08-09
•
Granted: 1927-10-04
•
Expires: 1946-08-09
Abstract
No abstract record available.
Inventors
- 👤 Barclay Gustaf Ivar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:25
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/32; E06B3/34; E06B3/36; E05; E05C; E05C17/00; E05C17/02; E05C17/04; E05C17/045; E06B3/325; E06B3/04; E06B3/06; E06B3/08; E06B3/12
Claims Analysis
Total Claims: 0
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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) | 1930-10-03 | 1931-04-04 | 1931-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-10-03 | 1935-04-04 | 1935-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-10-03 | 1939-04-04 | 1939-10-04 | $7700.00 | Window Closed / Lapsed |