X
Search Filters
Format Format
Subjects Subjects
Subjects Subjects
X
Sort by Item Count (A-Z)
Filter by Count
performing operations (82) 82
transporting (82) 82
blasting (29) 29
heating (29) 29
lighting (29) 29
mechanical engineering (29) 29
physics (29) 29
weapons (29) 29
chemistry (23) 23
metallurgy (23) 23
machine tools (18) 18
metal-working not otherwise provided for (18) 18
measuring (15) 15
testing (15) 15
human necessities (13) 13
electricity (12) 12
mechanical metal-working without essentially removingmaterial (12) 12
punching metal (12) 12
fixed constructions (11) 11
physical or chemical processes or apparatus in general (11) 11
combustion engines (10) 10
forge furnaces (10) 10
forging (10) 10
hammering (10) 10
hot-gas or combustion-product engine plants (10) 10
pressing metal (10) 10
riveting (10) 10
separation (10) 10
casting (9) 9
cladding or plating by soldering or welding (9) 9
cutting by applying heat locally, e.g. flame cutting (9) 9
powder metallurgy (9) 9
soldering or unsoldering (9) 9
welding (9) 9
working by laser beam (9) 9
agriculture (8) 8
animal husbandry (8) 8
fishing (8) 8
forestry (8) 8
hunting (8) 8
trapping (8) 8
basic electric elements (7) 7
casting of metals (7) 7
casting of other substances by the same processes or devices (7) 7
furnaces (7) 7
kilns (7) 7
ovens (7) 7
retorts (7) 7
combined heating and refrigeration systems (6) 6
foundations (6) 6
heat pump systems (6) 6
heat-pump systems (6) 6
hydraulic engineering (6) 6
information storage (6) 6
investigating or analysing materials by determining theirchemical or physical properties (6) 6
liquefaction solidification of gases (6) 6
manufacture or storage of ice (6) 6
metallurgy of iron (6) 6
refrigeration machines, plants or systems (6) 6
refrigeration or cooling (6) 6
soil shifting (6) 6
combustion engines in general (5) 5
ferrous or non-ferrous alloys (5) 5
furnaces, kilns, ovens, or retorts in general (5) 5
internal-combustion piston engines (5) 5
open sintering or like apparatus (5) 5
treatment of alloys or non-ferrous metals (5) 5
advertising (4) 4
appliances for teaching, or communicating with, the blind,deaf or mute (4) 4
cryptography (4) 4
diagrams (4) 4
display (4) 4
dredging (4) 4
earth drilling (4) 4
education (4) 4
educational or demonstration appliances (4) 4
general tagging of cross-sectional technologies spanning over several sections of the ipc (4) 4
general tagging of new technological developments (4) 4
globes (4) 4
harvesting (4) 4
information storage based on relative movement between recordcarrier and transducer (4) 4
measuring electric variables (4) 4
measuring magnetic variables (4) 4
mining (4) 4
mowing (4) 4
other separating by dry methods applicable to bulk material,e.g. loose articles fit to be handled like bulk material (4) 4
planetaria (4) 4
positive displacement machines for liquids (4) 4
pumps for liquids or elastic fluids (4) 4
seals (4) 4
separating solids from solids (4) 4
seperating solids from solids by sieving, screening, orsifting or by using gas currents (4) 4
soil-shifting (4) 4
sorting (4) 4
technical subjects covered by former uspc cross-reference art collections [xracs] and digests (4) 4
technologies or applications for mitigation or adaptation againstclimate change (4) 4
testing static or dynamic balance of machines orstructures (4) 4
testing structures or apparatus not otherwise provided for (4) 4
adhesives (3) 3
alloys (3) 3
more...
Language Language
Publication Date Publication Date
Click on a bar to filter by decade
Slide to change publication date range


No results were found for your search.

Cannot display more than 1000 results, please narrow the terms of your search.