US2616148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shuttering for use in molding arched concrete roof structures
Assignee: Kwikform Ltd
•
Filing: 1949-11-25
•
Granted: 1952-11-04
•
Expires: 1969-11-25
Abstract
No abstract record available.
Inventors
- 👤 Hawes Albert Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:44
CPC Classifications
E; E04; E04G; E04G11/00; E04G11/06; E04G11/062; E04G11/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1287573A
Cited
US1549950A
Cited
US1782921A
Cited
US2017553A
Cited
GB489886A
Cited
US2396174A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-04 | 1956-05-05 | 1956-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-04 | 1960-05-05 | 1960-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-04 | 1964-05-05 | 1964-11-04 | $7700.00 | Window Closed / Lapsed |