Patent US2944503A successfully refreshed from Google Patents.
US2944503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crimping tool for forming roof deck
Assignee: Acme Steel Co
•
Filing: 1954-05-12
•
Granted: 1960-07-12
•
Expires: 1974-05-12
Abstract
No abstract record available.
Inventors
- 👤 Allen B Wilson
- 👤 Stanius Godfrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:06
CPC Classifications
B; B21; B21D; B21D39/00; B21D39/02; B21D39/025; E; E04; E04D; E04D15/00; E04D15/04; Y; Y10; Y10T; Y10T29/00; Y10T29/34
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US430000A
Cited
US518766A
Cited
US1306920A
Cited
US1055680A
Cited
US1148672A
Cited
US1430807A
Cited
GB206941A
Cited
US1729946A
Cited
US1808452A
Cited
US1816556A
Cited
US1891767A
Cited
US2426670A
Cited
US2693218A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |