Patent US3814388A successfully refreshed from Google Patents.
US3394631A
Expired / Lapsed
US
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Bellows mechanism
Assignee: Individual
•
Filing: 1965-10-23
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Granted: 1968-07-30
•
Expires: 1985-10-23
Abstract
No abstract record available.
Inventors
- 👤 Tom H Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:14
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/02; F16F1/32; F16F3/00; F16F3/02; F16J; F16J3/00; F16J3/04; F16J3/048
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-30 | 1972-01-29 | 1972-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-30 | 1976-01-29 | 1976-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-30 | 1980-01-29 | 1980-07-30 | $7700.00 | Window Closed / Lapsed |