US2903546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation exposure unit
Assignee: 3M Co
•
Filing: 1957-02-19
•
Granted: 1959-09-08
•
Expires: 1977-02-19
Abstract
No abstract record available.
Inventors
- 👤 Edward A O'mara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:36
CPC Classifications
B; B44; B44B; B44B7/00; B29; B29C; B29C59/00; B29C59/16; B29C35/00; B29C35/02; B29C35/08; B29C35/0805; B29C2035/0822; B29L; B29L2007/00; B29L2007/008
Claims Analysis
Total Claims: 0
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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) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |