US3238556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable suction and blower unit
Assignee: Individual
•
Filing: 1963-05-07
•
Granted: 1966-03-08
•
Expires: 1983-05-07
Abstract
No abstract record available.
Inventors
- 👤 Elmer A Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:20
CPC Classifications
A; A45; A45D; A45D24/00; A45D24/32; A45D44/00; A45D44/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1322361A
Cited
US2049603A
Cited
GB414466A
Cited
US2078634A
Cited
US2088870A
Cited
US2227302A
Cited
US2668315A
Cited
US3009188A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |