Patent US3779303A successfully refreshed from Google Patents.
Patent US3475916A successfully refreshed from Google Patents.
US3475916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vaporizer
Assignee: Individual
•
Filing: 1966-12-12
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Granted: 1969-11-04
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Expires: 1986-12-12
Abstract
No abstract record available.
Inventors
- 👤 Sidney Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:13
CPC Classifications
F; F17; F17C; F17C7/00; F17C7/02; F17C7/04; F17C13/00; F17C13/02; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2225/00; F17C2225/03; F17C2225/033; F17C2227/00; F17C2227/03; F17C2227/0367; F17C2227/0388; F17C2227/0393; F17C2250/00; F17C2250/04; F17C2250/0404; F17C2250/043; F17C2250/06; F17C2250/0605; F17C2250/0636
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1778581A
Cited
US2012361A
Cited
US2506721A
Cited
US2497549A
Cited
US2539291A
Cited
US2669847A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-03 | 1973-05-05 | 1973-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-03 | 1977-05-05 | 1977-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-03 | 1981-05-05 | 1981-11-04 | $7700.00 | Window Closed / Lapsed |