Patent US3042437A successfully refreshed from Google Patents.
US3042437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Passage set
Assignee: Individual
•
Filing: 1960-05-09
•
Granted: 1962-07-03
•
Expires: 1980-05-09
Abstract
No abstract record available.
Inventors
- 👤 Walter J Duvall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:01
CPC Classifications
E; E05; E05C; E05C1/00; E05C1/08; E05C1/12; E05C1/16; E05C1/163; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/0969; Y10T292/097; Y10T292/0977; Y10T292/0989; Y10T292/0991; Y10T292/93
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1876079A
Cited
US2795948A
Cited
US2719424A
Cited
US2846255A
Cited
GB804227A
Cited
US2803957A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |