US3546773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of fabricating an amphibious load-supporting structure
Assignee: Pharmacia and Upjohn Co
•
Filing: 1968-08-23
•
Granted: 1970-12-15
•
Expires: 1988-08-23
Abstract
No abstract record available.
Inventors
- 👤 Harry Gerstin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:37
CPC Classifications
E; E02; E02B; E02B3/00; E02B3/04; E02B3/06; E02B3/062; E02B3/064; E01; E01C; E01C9/00; E01C9/08; E01D; E01D15/00; E01D15/14; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49838; Y10T29/53; Y10T29/53696
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1933597A
Cited
US2256645A
Cited
US2362596A
Cited
US2388171A
Cited
US2573087A
Cited
US2892433A
Cited
US3029606A
Cited
US3237414A
Cited
US3221696A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |