US2573530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making welded steel units
Assignee: Zallea Brothers Inc
•
Filing: 1948-03-31
•
Granted: 1951-10-30
•
Expires: 1968-03-31
Abstract
No abstract record available.
Inventors
- 👤 James P Zallea
- 👤 John J Mank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:37
CPC Classifications
F; F16; F16L; F16L51/00; F16L51/02; F16L51/025; F16L51/028; Y; Y10; Y10S; Y10S29/00; Y10S29/034; Y10T; Y10T29/00; Y10T29/49; Y10T29/49789; Y10T29/49792; Y10T29/49796; Y10T29/49826; Y10T29/49877; Y10T29/49893
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1717196A
Cited
US1000602A
Cited
US1052709A
Cited
US1350830A
Cited
US1526015A
Cited
US1835298A
Cited
US1806009A
Cited
US1982403A
Cited
US2414987A
Cited
US2489844A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-29 | 1955-04-30 | 1955-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-29 | 1959-04-30 | 1959-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-29 | 1963-04-30 | 1963-10-30 | $7700.00 | Window Closed / Lapsed |