Patent US3499543A successfully refreshed from Google Patents.
US3499543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crane
Assignee: WALTER C UPDEGRAVE
•
Filing: 1967-11-13
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Granted: 1970-03-10
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Expires: 1987-11-13
Abstract
No abstract record available.
Inventors
- 👤 Walter C Updegrave
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:33
CPC Classifications
B; B66; B66C; B66C13/00; B66C13/18; B66C2700/00; B66C2700/06; B66C2700/062; B66C2700/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3034670A
Cited
US3154199A
Cited
US3249336A
Cited
US3253683A
Cited
US3279621A
Cited
US3291451A
Cited
US3314657A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |