Patent US2631641A successfully refreshed from Google Patents.
US2631641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for producing protected metal articles
Assignee: Hospitality Homes
•
Filing: 1949-06-04
•
Granted: 1953-03-17
•
Expires: 1969-06-04
Abstract
No abstract record available.
Inventors
- 👤 Alden W Coffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:05
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/64; E04B1/642; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49936
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1060759A
Cited
US1593652A
Cited
US2031035A
Cited
US2073334A
Cited
US2194757A
Cited
US2330530A
Cited
US2423870A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-16 | 1956-09-15 | 1957-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-16 | 1960-09-15 | 1961-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-16 | 1964-09-15 | 1965-03-17 | $7700.00 | Window Closed / Lapsed |