US2753918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal expansion and contraction material and method and apparatus for forming the same
Assignee: Individual
•
Filing: 1952-09-26
•
Granted: 1956-07-10
•
Expires: 1972-09-26
Abstract
No abstract record available.
Inventors
- 👤 Paul D Bradfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:23
CPC Classifications
B; B21; B21D; B21D22/00; B21D22/02; B21D22/06; B21D13/00; B21D13/02; B21D22/027; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12389
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-10 | 1960-01-09 | 1960-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-10 | 1964-01-09 | 1964-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-10 | 1968-01-09 | 1968-07-10 | $7700.00 | Window Closed / Lapsed |